 Subjects -> ANTHROPOLOGY (Total: 398 journals)
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- Phylogenetic revision of Echinolaophonte Nicholls (Copepoda,
Harpacticoida, Laophontidae T. Scott) including the establishment of two
new genera and two new species
Abstract: Zoosystematics and Evolution 99(1): 217-252
DOI : 10.3897/zse.99.90114
Authors : Sung Joon Song, Sang-kyu Lee, Mijin Kim, Kai Horst George, Jong Seong Khim : The record of a new species of Echinolaophonte Nicholls, 1941 (Copepoda, Harpacticoida, Laophontidae) from Jeju Island (Korea) formed the basis for a detailed and exhaustive phylogenetic revision of the genus. Comparison of all 15 species currently assigned to Echinolaophonte (including the new Korean species) revealed that its current composition cannot be maintained. The phylogenetic relationships within Echinolaophonte were elucidated through the analysis of 135 morphological characters and the inclusion of four outgroups. As a result, four species were removed from Echinolaophonte and placed in two new genera: Parechinolaophonte gen. nov. for E. tropica Ummerkutty, 1970 and Pseudechinolaophonte gen. nov. for E. minuta Cottarelli & Forniz, 1991, E. mordoganensis Kuru, Sönmez & Karaytug, 2019 and E. veniliae Cottarelli, Forniz & Bascherini, 1992. Echinolaophonte longantennata Apostolov, 1990 had to be excluded from the analysis, due to the fragmentary and imprecise description. Accordingly, the phylogenetic relationships of the ten species remaining in Echinolaophonte are clarified. The new Korean species is described as Echinolaophonte musa sp. nov. Furthermore, the subspecies E. armiger f. briani Lang, 1965 is elevated to species rank as E. briani Lang, 1965. A detailed phylogenetic discussion is provided and a key to the species of Echinolaophonte is given. HTML XML PDF
PubDate: Mon, 20 Mar 2023 10:51:28 +020
- A new species of the genus Siler Simon, 1889 (Araneae, Salticidae,
Chrysillini) from India
Abstract: Zoosystematics and Evolution 99(1): 209-216
DOI : 10.3897/zse.99.99285
Authors : John T. D. Caleb, Ayush Parag, Aniruddha Datta-Roy : A new chrysilline jumping spider species belonging to the genus Siler Simon, 1889 is described from Odisha, India. Detailed morphological descriptions, illustrations of the male palp and female genitalia and phylogenetic relationships of the new Siler species are presented. Phylogenetic analysis reveals that the new species is sister to a clade of predominantly Southeast Asian Siler species. Furthermore, the results indicate the presence of multiple cryptic species masquerading as S. semiglaucus sensu lato. We also briefly discuss some unique behavioural observations on the newly-described species. HTML XML PDF
PubDate: Thu, 9 Mar 2023 14:09:36 +0200
- First record and description of three new species in the land snail genus
Diplommatina Benson, 1849 (Caenogastropoda, Diplommatinidae) from Satun
Province, Thailand
Abstract: Zoosystematics and Evolution 99(1): 195-207
DOI : 10.3897/zse.99.99030
Authors : Tuangthong Boonmachai, Elizabeth A. Bergey, Nattawadee Nantarat : The micro land snail genus Diplommatina (family Diplommatinidae) is widely distributed in Southeast Asia and includes many endemic species. Three new species of Diplommatina are described from Satun Province in southern Thailand. Diplommatina bulonensis sp. nov., D. laemsonensis sp. nov. and D. prakaiphetensis sp. nov. are distinguished from other species in the genus by their shell size and shape, the number of radial ribs on the penultimate whorl, the number of whorls, and features of the peristome. The agreement between phylogenetic tree based on analyses of COI and 16S sequences and comparative morphology support the delineation of these new species which, when compared to related species, belong to well-differentiated clades. The K2P distance between any of the three new species and other Diplommatina species included in the molecular phylogenetic analysis was at least 5.5% in COI and 3.9% in 16S. Two of the three new species (D. prakaiphetensis sp. nov. and D. bulonensis sp. nov.) are apparently endemic to Prakaiphet Hill and Bulon Pai Island, respectively. Additionally, we documented a new regional record for D. naiyanetri in Satun Province. These new species and records contribute to the knowledge of Thailand’s land snail biodiversity and highlight the need of conservation protections for regional karst habitats. HTML XML PDF
PubDate: Tue, 7 Mar 2023 19:02:05 +0200
- DNA barcoding of the genus Alburnoides Jeitteles, 1861 (Actinopterygii,
Cyprinidae) from Anatolia, Turkey
Abstract: Zoosystematics and Evolution 99(1): 185-194
DOI : 10.3897/zse.99.94333
Authors : Halim Canoglu, Ismail Aksu, Davut Turan, Yusuf Bektas : The present study investigated the ability of DNA barcoding to reliably identify the endemic freshwater species in Turkey, known as biodiversity hotspots. The barcode region (652 bp) of the mitochondrial cytochrome c oxidase subunit I (COI) was used to barcode 153 individuals from 13 morphologically identified species of the genus Alburnoides. Based on the Kimura two-parameter (K2P) evolution model, the average interspecific distance (0.0595) was 31-fold higher than the average intraspecific distance (0.0019). There was a clear-cut barcode gap (0.0158–0.0187) between maximum intraspecific distance (A. tzanevi and A. velioglui) and minimum nearest-neighbour distance (A. freyhofi and A. kurui) for Anatolian Alburnoides species and a common genetic threshold of 0.0158 sequence divergence was defined for species delimitation. The multiple species delimitation methods (ABGD, ASAP, GMYC and bPTP) revealed a total of 11 molecular operational taxonomic units (MOTUs) for 13 morphospecies. Neighbour-joining (NJ), Maximum Likelihood (ML) and Bayesian Inference (BI) tree analysis indicated that all haplotypes were clustered into two major clades, which corresponded to eleven Alburnoides species clusters, with strong bootstrap support. Furthermore, all the specimens clustered in concurrence with the morpho-taxonomic status of the species, except for two species (A. coskuncelebii and A. emineae) that were morphologically differentiated, but showed overlap in variation for COI-based DNA barcode data with other species. Overall, present results identified that COI-based DNA barcoding is effective for species identification and cataloguing of genus Alburnoides in Turkey. HTML XML PDF
PubDate: Mon, 6 Mar 2023 17:36:00 +0200
- Another giant species of the microhylid frog genus Cophixalus Boettger,
1892 from the mountains of Papua New Guinea and first records of
procoracoids in the genus
Abstract: Zoosystematics and Evolution 99(1): 173-183
DOI : 10.3897/zse.99.97006
Authors : Rainer Günther, Chris Dahl, Stephen J. Richards : A new arboreal species of the microhylid genus Cophixalus Boettger, 1892 is described from montane rainforest on Papua New Guinea’s central cordillera. With a male SUL exceeding 44.0 mm, the new species is among the largest members of the genus; the only other Papuan species known to reach this size is C. riparius Zweifel, 1962. The new species differs from C. riparius in a small number of mensural characters and by its distinct advertisement call, a single explosive ‘bark’ uttered singly or in rapid series. In contrast, calls of C. riparius recorded near the type locality are a series of drawn out, rasping croaks. Calls of the two species are analysed and compared. The two species also appear to have different ecologies, with the new species found only high in trees, while C. riparius is often encountered in vegetation on or near the forest floor. Examination of osteological features revealed the presence of cartilaginous procoracoids in both species, representing the first records of procoracoids in the speciose genus Cophixalus. Lack of procoracoids is traditionally considered an important diagnostic character for defining Cophixalus but both species also lack clavicles, a character considered diagnostic for Cophixalus and a key feature distinguishing the genus from the closely related Oreophryne Boettger, 1895. Because preliminary published genetic data indicate that they are nested within Cophixalus, we retain both species in that genus until a comprehensive molecular phylogeny of Cophixalus and related genera, particularly Oreophryne, is completed. HTML XML PDF
PubDate: Wed, 1 Mar 2023 14:22:09 +0200
- Species delimitation, molecular phylogeny and historical biogeography of
the sweetlips fish (Perciformes, Haemulidae)
Abstract: Zoosystematics and Evolution 99(1): 135-147
DOI : 10.3897/zse.99.96386
Authors : Ehsan Damadi, Faezeh Yazdani Moghaddam, Mehdi Ghanbarifardi : The subfamily Plectorhinchinae (sweetlips) is composed of poorly-known species with high commercially and ecologically values that exhibit phenotypic plasticity and various morphologies. Few studies have assessed the validity of sweetlips, intergeneric relationships and evolutionary survey in this subfamily, which have not yet been resolved. This study investigated the DNA sequences of (1) the mitochondrial COI gene to delimit species, and (2) two mitochondrial (COI and Cyt b), and one nuclear (RAG1) markers to infer phylogenetic relationships and evolutionary and biogeographic history. The molecular results could differentiate Diagramma punctatum from the other species, but failed to distinguish D. labiosum as a distinct species with considerably lower genetic distances for the COI (0.53%) and Cyt b (0.51%) markers. However, additional taxonomic investigations are required to shed light on this issue. All previously described nominal species of sweetlips in the northwest Indian Ocean were found to be well supported. The monophyly of Plectorhinchus is not supported and Diagramma pictum and D. punctatum should be assigned to the genus Plectorhinchus. The biogeographic history of Plectorhinchinae likely originated in the Indo-Pacific ca. 34 Ma (30–39 Ma; late Eocene/ middle Oligocene) and subsequently colonised the Western Indian Ocean and the Central Indo-Pacific. Maximum diversification within the subfamily occurred from the middle Miocene to Pliocene, coinciding with dispersal and vicariance events. Diversification was probably driven by both biological and geographical factors. HTML XML PDF
PubDate: Thu, 23 Feb 2023 11:15:02 +020
- Chromatic polymorphism in Trichomycterus albinotatus (Siluriformes,
Trichomycteridae), a mountain catfish from south-eastern Brazil and the
role of colouration characters in trichomycterine taxonomy
Abstract: Zoosystematics and Evolution 99(1): 161-171
DOI : 10.3897/zse.99.98341
Authors : Wilson J. E. M. Costa, José Leonardo O. Mattos, Pedro F. Amorim, Beatrizz O. Mesquita, Axel M. Katz : Colouration is an important tool for systematists inferring species limits and phylogenetic relationships of teleost fishes, but the use of colouration variation in trichomycterine catfish systematics has generated some controversy. We first report and describe the occurrence of four, geographically disjunct colour morphs in Trichomycterus albinotatus, endemic to south-eastern Brazil, as well as ontogenetic colouration change in each morph. A phylogenetic analysis using a cytb fragment (1098 bp) for 23 specimens representing all colour morphs and four outgroups did not support any correlation between colour morphs and lineages, with different colour morphs sharing identical haplotypes. This study indicated that young adult specimens found in lighter habitats had white and brown to black spots on the flank, whereas similar-sized specimens inhabiting darker habitats had white spots inconspicuous or absent and dark brown or black spots expanded. Individuals above about 65 mm SL of all populations had flank white marks less conspicuous or absent and cryptic habits during daylight, contrasting with smaller individuals with white marks and actively swimming above the substrate. Literature data indicate that ontogenetic colouration and habit changes occur in different trichomycterid lineages. Our data thus show that colouration may be problematic in taxonomical studies, although often being consistently used to diagnose species and clades. We conclude that colouration should not be discarded a priori as evidence of trichomycterine relationships and species limits, but should be used with caution in systematic studies, being necessary additional evidence, such as osteological characters or molecular data. HTML XML PDF
PubDate: Thu, 23 Feb 2023 11:14:36 +020
- Four new species of coral- and rock-boring polychaetes Daylithos
(Annelida, Flabelligeridae) from the Pacific Ocean
Abstract: Zoosystematics and Evolution 99(1): 149-159
DOI : 10.3897/zse.99.97944
Authors : Naoto Jimi, Toshihiko Fujita, Sau Pinn Woo : Four new species of Daylithos (Flabelligeridae, Annelida) are described, based on specimens collected from rocks and corals of Japan and Malaysia. Daylithos, contains one species, D. parmatus, currently reported from Japan. However, the specimens described in previous reports were unable to be located and thus deemed lost. Therefore, it was unclear whether the specimens described as D. parmatus in those studies were, indeed, the species. In Malaysia, D. parmatus has also been known as popular species from corals. The specimens collected from Langkawi (Malaysia) showed clearly different characters from D. parmatus and other congeners. In this study, we describe four new species, Daylithos japonicus, D. amamiensis, D. sugashimaensis and D. langkawiensis, based on newly-collected specimens from several part of Japan and Malaysia. These new species can be discriminated from other congeners by body colour, presence of eyes, shape of dorsal shield, length of caruncle and arrangement of neurochaetae. We have also provided mitochondrial cytochrome c oxidase subunit I sequences of the new species. HTML XML PDF
PubDate: Thu, 23 Feb 2023 11:14:11 +020
- Two new Stenaelurillus species (Araneae, Salticidae, Aelurillina) from
Western Ghats, India
Abstract: Zoosystematics and Evolution 99(1): 123-133
DOI : 10.3897/zse.99.97985
Authors : Puthoor Pattammal Sudhin, Souvik Sen, John T. D. Caleb : Two new species – Stenaelurillus megamalai sp. nov. (♂♀) from the colorful group and Stenaelurillus neyyar sp. nov. (♂♀) from the black and white group – are described from the southern Western Ghats of India. Detailed morphological descriptions, illustrations, as well as the distribution maps are provided. New distributional data for three other species, Stenaelurillus albus Sebastian, Sankaran, Malamel & Joseph, 2015, S. arambagensis (Biswas & Biswas, 1992) and S. wandae Logunov, 2020 are also provided. HTML XML PDF
PubDate: Thu, 2 Feb 2023 15:11:23 +0200
- First molecular identification of the trematode Maritrema bonaerense
Etchegoin & Martorelli, 1997 (Plagiorchiida, Microphallidae) from its
intermediate hosts, the gastropod Heleobia australis (d’Orbigny, 1835)
(Littorinimorpha, Cochliopidae) and the crab Neohelice granulata (Dana,
1851) (Decapoda, Varunidae) in Argentina
Abstract: Zoosystematics and Evolution 99(1): 117-121
DOI : 10.3897/zse.99.91381
Authors : Lorena Martinez, Carmen Gilardoni, Cintia Medina, Juan José Lauthier, Florencia Cremonte, Jorge Etchegoin : The genus Maritrema Nicoll, 1907 (Platyhelminthes, Trematoda, Plagiorchiida, Microphallidae) comprises cosmopolitan species that predominantly parasitize birds. Although approximately 65 species have been described worldwide, including 6 for Argentina, molecular data referring to Maritrema species are still scarce worldwide, especially in South America. Unfortunately, this lack of references for nucleotide sequences is an obstacle to understanding the taxonomy and life cycles of trematodes, and impedes advancing our studies on the phylogeny and geographical distribution of these parasites. For that reason, we performed the molecular study of developmental stages of Maritrema bonaerense: cercariae (collected from the snail first intermediate host Heleobia australis, inhabiting Mar Chiquita lagoon) and metacercariae (collected from the crab second intermediate host Neohelice granulata, inhabiting Mar Chiquita lagoon and San Antonio Oeste, Argentina). The accordance between the ITS2 sequence of M. bonaerense cercaria from the snail H. australis and the sequences of metacercariae from the crab N. granulata was 100%, supporting previous findings of the life cycle of M. bonaerense based on morphological data. All Maritrema species are included in a monophyletic and well-supported clade. Maritrema bonaerense grouped more closely with Maritrema gratiosum. These findings contribute to the knowledge of digeneans in coastal marine ecosystems. HTML XML PDF
PubDate: Thu, 26 Jan 2023 17:14:39 +020
- Filling the gap: Noteworthy herpetological discoveries in North West
Province, South Africa
Abstract: Zoosystematics and Evolution 99(1): 101-116
DOI : 10.3897/zse.99.90181
Authors : Krystal A. Tolley, Nicolas S. Telford, Buyisile G. Makhubo, R. John Power, Graham J. Alexander : The North West Province, South Africa, is centrally situated in southern Africa and is characterised by savannah with a mesic, temperate climate in the east and a hot, arid climate in the west. While the eastern region is fairly well-documented for herpetofauna, the arid central and western regions are poorly surveyed. Given that the Province has been targeted by the national government for development of infrastructure, the overall deficiency of biodiversity data could result in impact assessments that are not well-informed. We, therefore, carried out herpetofaunal surveys over two years (2019–2020) in the North West Province to improve knowledge on the distributions of reptiles and amphibians. Our surveys added a total of 578 new records to an earlier baseline of 1340 records. In addition, over 300 records were added to a citizen-science platform in connection with our surveys. As compared to the previous 100 years, our surveys increased the herpetofaunal dataset by 68% in just two years, increased geographic coverage by 20% and brought the total number of species with accurate records for the Province to 102 reptiles and 23 amphibians. We also recorded range extensions for five reptile species and confirmed the presence of Dendroaspis polylepis (Black Mamba) in the west where it had been last recorded in 1996. Our surveys resulted in a significant increase in biodiversity data for the Province and provided a better foundation for spatial planning that accounts for biodiversity and the maintenance of ecological function. HTML XML PDF
PubDate: Thu, 26 Jan 2023 17:13:36 +020
- A contribution on the morphometrics of the thick-clawed crayfish
Pontastacus pachypus (Rathke, 1837) (Decapoda, Astacoidea, Astacidae)
Abstract: Zoosystematics and Evolution 99(1): 93-100
DOI : 10.3897/zse.99.98291
Authors : Aiman Imentai, Martin Bláha, Lukáš Veselý, Jiří Křišťan, Tomas Policar : The thick–clawed crayfish Pontastacus pachypus (Rathke, 1837) is an endangered, and the least known, crayfish species in Europe. Currently, detailed information regarding the morphology, ecology and reproduction of thick–clawed crayfish is outdated. This study presents, for the first time, detailed photographs of the thick-clawed crayfish, and updated information on distinctive morphological characters and morphometric analysis. New specifications of the carapace and appendage morphological characteristics were established as: 1) the rostrum is long, sharply pointed and has three pairs of distinctive sub-apical lateral spines, 2) two well–developed pairs of post–orbital ridge on the carapace are ended by prominent spine; 3) each finger of chelae ends with a black sharp tip. Among the 18 morphometric indices, carapace width to the total length (CPW/TL), abdomen width to the total length (ABW/TL) and claw height to the claw width (CLH/CLW) clearly differentiate P. pachypus from the other representatives of Astacus genus (A. colchicus and A. astacus) and P. leptodactylus (P
PubDate: Tue, 24 Jan 2023 18:53:03 +020
- Taxonomic revision and re-description of Ateuchosaurus pellopleurus
(Hallowell, 1861) (Reptilia, Squamata, Scincidae) with resurrection of A.
okinavensis (Thompson, 1912)
Abstract: Zoosystematics and Evolution 99(1): 77-91
DOI : 10.3897/zse.99.95923
Authors : Tomohisa Makino, Takafumi Nakano, Taku Okamoto, Tsutomu Hikida : The scincid lizard Ateuchosaurus pellopleurus (Hallowell, 1861) has been recognized as a single species widely distributed in the Osumi, Tokara, Amami, and Okinawa Groups of the Ryukyu Archipelago, southern Japan. However, a recent molecular phylogenetic study suggested that this skink should be divided into two species: one distributed in the Osumi to Amami Groups, and another distributed in the Okinawa Group. For A. pellopleurus, two extant syntypes collected from an island of the Amami Group were confirmed. Therefore, we identified the species in the Osumi to Amami Groups as A. pellopleurus sensu stricto by designating one of the syntypes as the lectotype for this species. For the species in the Okinawa Group, we resurrected A. okinavensis (Thompson, 1912), of which the type locality is on Okinawajima Island in the Okinawa Group. Ateuchosaurus pellopleurus and A. okinavensis can be differentiated by the following characteristics: usually separated frontonasal and frontal, 8–14 subdigital scales on the fourth toe (mode = 11), and usually two or three pairs of dorsal median scale rows with black stripes in A. pellopleurus; usually fused frontonasal and frontal, 10–16 subdigital scales on the fourth toe (mode = 13), and usually no stripe on the dorsal scales or a pair of dorsal median scale rows with black stripes in A. okinavensis. HTML XML PDF
PubDate: Fri, 20 Jan 2023 10:12:47 +020
- Can you find me' A new sponge-like nudibranch from the genus Jorunna
Bergh, 1876 (Mollusca, Gastropoda, Discodorididae)
Abstract: Zoosystematics and Evolution 99(1): 63-75
DOI : 10.3897/zse.99.95222
Authors : Yara Tibiriçá, Jenny Strömvoll, Juan Lucas Cervera : The nudibranch diversity of the western Indian Ocean is comparatively one of the least studied in the world. In this paper a sponge-like Discodoridae nudibranch Jorunna liviae sp. nov. is described. The description is based on integrative anatomy, including molecular analysis of two genes (the mitochondrial COI and the nuclear H3), dissections, electron microscopy (SEM) of buccal elements, micro tomography of the spicule’s arrangements and ecological observations. This study provides the first ever molecular data of Jorunna species from the western Indian Ocean, helping to fill the gap to further understand this apparent paraphyletic genus. HTML XML PDF
PubDate: Fri, 13 Jan 2023 17:09:20 +020
- Possible causes of amphi-Atlantic distribution of Orchestia gammarellus
(Pallas, 1776) (Crustacea, Amphipoda, Talitridae) in the North Atlantic: a
review
Abstract: Zoosystematics and Evolution 99(1): 55-62
DOI : 10.3897/zse.99.95980
Authors : David J. Wildish, John H. McDonald : Hypotheses concerning the modern distribution of Orchestia gammarellus (Crustacea, Amphipoda, Talitridae) and its causes in the North Atlantic are discussed. The synanthropic dispersal hypothesis of Henzler and Ingólfsson (2008) considers O. gammarellus as originating on the eastern shore of the North Atlantic and being transported by humans to Iceland and the western Atlantic shore (Newfoundland and the Maritime Provinces of Canada). The Eocene and natural dispersal hypothesis of Myers and Lowry (2020) proposes a geologically earlier origin of O. gammarellus when the west and east shores of the North Atlantic were still connected. Present day amphi-Atlantic distribution was explained by vicariance, with the vicariant event causing separation of O. gammarellus being continental drift drawing apart the west and east shores of the North Atlantic. A post-glacial natural dispersal hypothesis proposed herein, involves transport on ice floes or in driftwood from European shores to Iceland and the Atlantic Provinces of Canada. The small genetic distances amongst populations found by Henzler and Ingólfsson (2008) at the COI gene are inconsistent with the Eocene vicariance hypothesis. On evolutionary grounds, we question Myers and Lowry’s (2020) designation of the Icelandic and Canadian populations as a new species of Orchestia. Existing molecular and morphological data are insufficient to distinguish between human-aided dispersal and natural rafting. HTML XML PDF
PubDate: Mon, 9 Jan 2023 09:45:13 +0200
- Additions to the distribution of Sudanese scorpions
Abstract: Zoosystematics and Evolution 99(1): 45-53
DOI : 10.3897/zse.99.90875
Authors : Manal Siyam, Jason A. Dunlop, František Kovařík, Abubakr Mohammad : Six species of scorpion (Arachnida: Scorpiones) are documented from eighteen localities in seven different states within the Republic of the Sudan. Combining this new data with historical records in the Sudan Natural History Museum and the published literature enables the first provisional distribution maps for Sudanese scorpions. New state records could be added for three medically significant species: Androctonus amoreuxi (Audouin, 1826) from Khartoum, North Kordofan and North Darfur, Leiurus quinquestriatus (Ehrenberg, 1829) from Kassala, River Nile, White Nile and North Darfur, and Parabuthus abyssinicus (Pocock, 1901) from Kassala. Among the less venomous species, we offer new state records for Buthacus leptochelys (Ehrenberg, 1829) in White Nile State, for Compsobuthus werneri (Birula, 1908) in North Kordofan, White Nile and Kassala States and for Orthochirus olivaceus (Karsch, 1881) in River Nile, Northern and Kassala States. Further information about the taxonomy, distribution and toxicity of Sudanese scorpions is presented. HTML XML PDF
PubDate: Fri, 6 Jan 2023 17:47:42 +0200
- A freshwater mussel species reflects a Miocene stream capture between the
Mekong Basin and East Asian rivers
Abstract: Zoosystematics and Evolution 99(1): 29-43
DOI : 10.3897/zse.99.90784
Authors : Ekaterina S. Konopleva, Ivan N. Bolotov, Ilya V. Vikhrev, Khamla Inkhavilay, Mikhail Yu. Gofarov, Alexander V. Kondakov, Alena A. Tomilova, Yulia E. Chapurina, Tu Van Do, John M. Pfeiffer, Manuel Lopes-Lima, Arthur E. Bogan : Freshwater mussels belonging to the genus Cristaria Schumacher, 1817 (Bivalvia: Unionidae) are widespread from Mongolia to Indochina while the range of one species, C. plicata (Leach, 1814), covers two biogeographic subregions, i.e., East Asian (Amur River to Vietnam) and Sundaland (Mekong River basin). We present here a taxonomic revision of the nominal taxon Anodonta bellua Morelet, 1866 which was described from the Mekong (Lake Tonle-Sap, Cambodia) but is currently considered a synonym of C. plicata. We obtained molecular data for newly collected Cristaria representatives from the Mekong’s tributaries in Laos, which were found as a divergent species-level phylogenetic clade within the genus that is distant from C. plicata. Nevertheless, comparative morphological and morphometric studies did not reveal any significant differences between these two congeners. Our time-calibrated biogeographic modeling reveals that the split between Cristaria bellua (Mekong) and C. clessini (East Asia) probably occurred in the mid-Miocene (15.8 Ma) and may reflect an ancient stream capture between the Mekong Basin and East Asian rivers. HTML XML PDF
PubDate: Fri, 6 Jan 2023 17:46:09 +0200
- A new freshwater amphipod (Amphipoda, Gammaridae), Gammarus tumaf sp. nov.
from the Gökgöl Cave, Türkiye
Abstract: Zoosystematics and Evolution 99(1): 15-27
DOI : 10.3897/zse.99.89957
Authors : Murat Özbek, İsmail Aksu, Hazel Baytaşoğlu : A new amphipod species belonging to the genus Gammarus is described from the Gökgöl Cave, Zonguldak Province, Türkiye. The newly-identified species is relatively small (13 mm) and is a member of the Gammarus pulex-group by the presence of numerous long setae along the posterior margins of pereopods 3 and 4. The specimens were sampled from a shallow pond located in the dark zone (about 1 km inside the entrance) of the cave. Minute eyes, setose (both peduncle and flagellar segments) second antenna, slightly swollen flagellar segments of the second antenna, setose pereopods 3 and 4 and relatively short endopod/exopod ratio of the third uropod are the character combination of the newly-identified species in addition to lacking body pigmentation. The molecular phylogeny, based on the concatenated dataset (28S+COI, 1495 bp) indicated that the new species was resolved from the other Gammarus species by high bootstrap (NJ: 100, ML: 100). In addition to Gammarus tumaf sp. nov., mtDNA COI and nuclear DNA 28S gene data of Gammarus baysali Özbek et al., 2013 were recorded for the first time. The newly-identified species was well-differentiated from the genetically closest species, G. baysali, with genetic distance of 12.22% and 0.55% for the COI and 28S genes, respectively. Detailed descriptions and drawings of the extremities of the holotype male were given and the morphology of the newly-identified species is compared with its relatives. HTML XML PDF
PubDate: Fri, 6 Jan 2023 17:24:38 +0200
- Taxonomic review of the Chondrostoma (Teleostei, Leuciscidae) species from
inland waters of Turkey: an integrative approach
Abstract: Zoosystematics and Evolution 99(1): 1-13
DOI : 10.3897/zse.99.91275
Authors : Fahretti̇n Küçük, Yılmaz Çi̇ftçi, Sali̇m Serkan Güçlü, Ayşe Gül Mutlu, Davut Turan : The genus Chondrostoma (Leuciscidae: Leuciscinae), composed of small to medium-sized fish with a scraper feeding characteristic, is distributed in the West and Middle East, Caucasus, Europe and Northern Mediterranean drainages. This genus spreads across Anatolia and Thrace, with the exception of Göksu and Eşen rivers in Turkey’s Mediterranean basin. It is also difficult to understand the systematics of Chondrostoma, which is complicated morphologically. Therefore, in this study, an identification key was made by evaluating external morphology, osteology (some jaw bones and 5th ceratobrachial) and molecular features together. A total of 13 valid species have been so far recorded from Turkish inland waters, among which are C. beysehirense, C. ceyhanensis, C. colchicum, C. cyri, C. holmwoodii, C. kinzelbachi, C. meandrense, C. nasus, C. regium, C. smyrnae, C. toros, C. turnai and C. vardarense. Our molecular data showed that C. angorense (Kızılırmak and Sakarya rivers) is a synonym of C. colchicum (Çoruh and Yeşilırmak rivers). In addition, C. angorense was morphologically similar to C. colchicum. Therefore, we explored the systematic position of C. vardarense (from Meriç River) and C. nasus (from Simav River) in this study. HTML XML PDF
PubDate: Fri, 6 Jan 2023 17:21:39 +0200
- Rock island melody remastered: two new species in the Afroedura bogerti
Loveridge, 1944 group from Angola and Namibia
Abstract: Zoosystematics and Evolution 98(2): 435-453
DOI : 10.3897/zse.98.86299
Authors : Werner Conradie, Andreas Schmitz, Javier Lobón-Rovira, François S. Becker, Pedro Vaz Pinto, Morgan L. Hauptfleisch : Newly collected material from northern Namibia’s Otjihipa Mountains and west-central Angola allowed us to revisit the Afroedura bogerti Loveridge, 1944 group. The employment of additional gene markers, including nuclear markers, allowed us to identify two new species in the group and infer species boundaries and potential speciation events in Afroedura from southwestern Africa. The new Namibian material is recovered as a sister species to A. donveae, from which it differs mostly by the colour of the iris (copper versus black) and dorsal colouration. Material from the first elevational gradient of the escarpment in Benguela Province, Angola was found to be more closely related to A. bogerti than A. wulfhaackei. The differences between these two species are more subtle, although the new species exhibits higher mid-body scale rows (79.5 versus 74.8), different dorsal colouration and supranasal scales always in contact (versus 57% in contact). HTML XML PDF
PubDate: Mon, 21 Nov 2022 18:15:36 +020
- A new cryptic species of land snail from the Northern Territory,
Australia (Stylommatophora, Camaenidae, Parglogenia)
Abstract: Zoosystematics and Evolution 98(2): 427-433
DOI : 10.3897/zse.98.93851
Authors : Frank Köhler, Michael Shea : Parglogenia cobourgensis sp. nov., a new species of camaenid land snail is described from Cobourg Peninsula, Top End of the Northern Territory in Australia. This new species has a shell that is identical to the type species of the genus, Parglogenia pelodes, which also occurs in the Top End. However, both species clearly differ in their reproductive anatomy and are also well-differentiated in terms of mitochondrial phylogenetics. A single specimen of a Parglogenia species from Croker Island, West Arnhem Land, is hypothesized to represent a third species based on details of its reproductive anatomy. However, only a single historical specimen was available for study. We therefore refrain from formally naming this species because of the incomplete information at hand. Helix subgranosa Le Guillou, 1842, a nominal species previously placed in Parglogenia, is synonymized with Xanthomelon durvillii (Hombron & Jacquinot, 1841). HTML XML PDF
PubDate: Mon, 31 Oct 2022 10:09:29 +020
- A new species of crayfish of the genus Cherax from Indonesian New Guinea
(Crustacea, Decapoda, Parastacidae)
Abstract: Zoosystematics and Evolution 98(2): 411-425
DOI : 10.3897/zse.98.94753
Authors : Christian Lukhaup, Rury Eprilurahman : A new species of the genus Cherax is described and illustrated. Cherax wagenknechtae sp. nov., endemic to the Beraur and Klasabun River drainages in the western part of the Kepala Burung (Vogelkop) peninsula, West Papua, Indonesia, is described, figured and compared with its closest relatives, Cherax pulcher Lukhaup, 2015. The new species may be easily distinguished from Cherax pulcher by the shape of the chelae, rostrum and body, and coloration. HTML XML PDF
PubDate: Mon, 24 Oct 2022 10:16:59 +030
- A new species of New Guinea Worm-Eating Snake (Serpentes, Elapidae,
Toxicocalamus Boulenger, 1896) from Western Highlands Province, Papua New
Guinea
Abstract: Zoosystematics and Evolution 98(2): 399-409
DOI : 10.3897/zse.98.90520
Authors : Jackson R. Roberts, Bulisa Iova, Christopher C. Austin : We describe a new species of New Guinea Worm-Eating Snake (Elapidae: Toxicocalamus) from a specimen in the reptile collection of the Papua New Guinea National Museum and Art Gallery. Toxicocalamus longhagen sp. nov. can be easily distinguished from other species of this genus by the presence of paired subcaudals, a preocular scale unfused from the prefrontal scale, a prefrontal distinct from the internasal scale that contacts the supralabials, a single large posterior temporal and two postocular scales. The new taxon is currently known only from one specimen, which was collected from Mt. Hagen Town in Western Highlands Province, Papua New Guinea in 1967. The new species was originally identified as T. loriae, but the unique head scalation and postfrontal bone morphology revealed through micro-computed tomography scanning easily distinguish the new species from T. loriae sensu stricto. This is the first species of this genus described from Western Highlands Province. HTML XML PDF
PubDate: Wed, 5 Oct 2022 09:20:28 +0300
- Multigene phylogeny of the Indo–West Pacific genus Enosteoides
(Crustacea, Decapoda, Porcellanidae) with description of a new species
from Australia
Abstract: Zoosystematics and Evolution 98(2): 387-397
DOI : 10.3897/zse.98.90540
Authors : Alexandra Hiller, Bernd Werding : The porcellanid genus Enosteoides Johnson, 1970, currently containing six species, was raised in the 1970s to contain aberrant Indo–West Pacific forms of the diverse and cosmopolitan genus Porcellana Lamarck, 1801. Here, we describe the most aberrant form as Enosteoides spinosus sp. nov., from the northeast and northwest coasts of Australia and present results on phylogenetic reconstructions of the genus, based on an 1,870 bp alignment of concatenated DNA sequences of three mitochondrial and one nuclear gene. The new species is peculiarly spiny and has a higher morphological affinity to the type species of the genus, E. ornatus (Stimpson, 1858), than to the other congeneric species. Our molecular results indicate that Enosteoides is not monophyletic. The new species and E. ornatus are encompassed in a clade, which does not share immediate common ancestry with the clade containing the other species of Enosteoides. This clade is more closely related to species of Porcellana and Pisidia. Relatively large interspecific genetic distances between and within the two clades, as compared to distances estimated in American pairs of species on each side of the Panama Isthmus, suggest ancient divergence, probably followed by extinction events or low speciation rate. Relatively large intraspecific distances between Australian populations of the new species of Enosteoides from geographically distant locations suggest some level of phylogeographic structure. HTML XML PDF
PubDate: Tue, 4 Oct 2022 17:53:13 +0300
- An unexpected occurrence: discovery of the genus Cybaeopsis Strand, 1907
in Europe with the description of a new species from Italy (Arachnida,
Araneae, Amaurobiidae)
Abstract: Zoosystematics and Evolution 98(2): 377-385
DOI : 10.3897/zse.98.90858
Authors : Francesco Ballarin, Paolo Pantini : We report on the unexpected finding of a new species of the genus Cybaeopsis Strand, 1907, C. lodovicii sp. nov. from the Northern Apennine Mountains in Italy. This is the first documented record of a Cybaeopsis species in Europe. Other currently known species of this genus have been previously recorded in North America, the Russian Far-East and Japan. The new species is illustrated and described based on both sexes. Another species from Portugal, Cybaeopsis theoblicki (Bosmans, 2021) comb. nov., recently described in the genus Callobius Chamberlin, 1947, is hereby transferred to Cybaeopsis on the basis of morphological characters. An updated key to the European genera of Amaurobiidae is provided. HTML XML PDF
PubDate: Tue, 20 Sep 2022 18:29:50 +030
- Phylogenetic position of the relict South American genus Idiopyrgus
Pilsbry, 1911 (Gastropoda, Truncatelloidea), with the description of two
new cave species
Abstract: Zoosystematics and Evolution 98(2): 365-375
DOI : 10.3897/zse.98.90797
Authors : Rodrigo B. Salvador, Fernanda S. Silva, Maria E. Bichuette : Idiopyrgus is a relict genus of freshwater snails from Brazil traditionally classified in the family Pomatiopsidae. Herein, we use molecular data from newly acquired specimens to test that classification through Bayesian inference phylogenetic analysis. We conclude that Idiopyrgus belongs in the Gondwanan family Tomichiidae, together with the African genus Tomichia and the Australian genus Coxiella. Furthermore, we reassess currently synonymized genus- and species-level names in Idiopyrgus. The genera Hydracme and Aquidauania are considered synonymous with Idiopyrgus. The species I. brasiliensis and I. pilsbryi are restored as accepted species; I. walkeri is considered a taxon inquirendum. Two new species from caves in Bahia state are described herein: Idiopyrgus adamanteus sp. nov. and Idiopyrgus minor sp. nov. HTML XML PDF
PubDate: Wed, 14 Sep 2022 10:58:27 +030
- A new rock gecko in the Cnemaspis siamensis group (Reptilia, Gekkonidae)
from Kanchanaburi Province, western Thailand
Abstract: Zoosystematics and Evolution 98(2): 345-363
DOI : 10.3897/zse.98.89591
Authors : Attapol Rujirawan, Siriporn Yodthong, Natee Ampai, Korkhwan Termprayoon, Akrachai Aksornneam, Bryan L. Stuart, Anchalee Aowphol : We describe a new species of the gekkonid genus Cnemaspis from Erawan National Park in Kanchanaburi Province of western Thailand. Molecular phylogenetic analyses, based on the mitochondrial NADH dehydrogenase subunit 2 gene and flanking tRNAs, revealed that Cnemaspis auriventralis sp. nov. is nested within the C. siamensis group and is closely related to C. huaseesom, but has uncorrected pairwise genetic divergences of 12.12–27.92% from all other species in the C. siamensis group. The new species is also distinguished from other species in the C. siamensis group by having the combination of snout-vent length 36.7–38.6 mm in males (N = 3), 32.9–36.9 mm in females (N = 2); eight to ten supralabials; seven to nine infralabials; ventral scales smooth; six or seven precloacal pores in males; 16–17 paravertebral tubercles linearly arranged; tubercles on the lower flanks present; lateral caudal furrows present; no caudal tubercles in the lateral furrows; ventrolateral caudal tubercles present anteriorly; caudal tubercles not encircling tail; subcaudals smooth bearing a single median row of enlarged smooth scales; two postcloacal tubercles on each side; no shield-like subtibial scales; subtibial scales smooth; no enlarged submetatarsal scales; 23–27 subdigital lamellae on the fourth toe; sexually dimorphic for dorsal and ventral colour pattern; prescapular marking absent; gular marking absent; and yellow colouration in life of all ventral surfaces of head, body and tail in adult males. The new species is currently known only from upland karst habitat at its type locality. HTML XML PDF
PubDate: Wed, 14 Sep 2022 10:57:09 +030
- Redefinition of Heptapterus (Heptapteridae) and description of Heptapterus
carmelitanorum, a new species from the upper Paraná River basin in Brazil
Abstract: Zoosystematics and Evolution 98(2): 327-343
DOI : 10.3897/zse.98.89413
Authors : Gabriel de Carvalho Deprá, Gastón Aguilera, Dario R. Faustino-Fuster, Axel M. Katz, Valter M. Azevedo-Santos : A new diagnosis and a new classification of Heptapterus are provided and a new species, H. carmelitanorum, is described. Heptapterus is diagnosed by the following character combination: adipose fin confluent with the caudal fin; non-bifurcate caudal fin; anal-fin insertion posterior to vertical through adipose-fin insertion; 10–23 anal-fin rays; anal fin not confluent with caudal fin; and extremely elongate body, with a head length of 16.1–24.9%SL. Species included in Heptapterus are H. borodini, H. carmelitanorum, H. carnatus, H. exilis, H. hollandi, H. mandimbusu, H. mbya, H. mustelinus, H. ornaticeps, and H. qenqo. Some of the character states diagnosing H. carmelitanorum among its congeners are the anal-fin insertion less than one eye diameter posterior to a vertical through the adipose-fin insertion (vs. more than one eye diameter in all congeners); the isognathous mouth (vs. slightly to moderately retrognathous, except H. borodini); and the keel formed by ventral procurrent caudal-fin rays shallow, far from reaching anal-fin base (vs. keel formed by ventral procurrent caudal-fin rays deep, continuing almost to the anal-fin base, except in H. borodini and H. hollandi). HTML XML PDF
PubDate: Thu, 8 Sep 2022 10:46:06 +0300
- A new genus of Pseudospirobolellidae (Diplopoda, Spirobolida) from
Abstract: Zoosystematics and Evolution 98(2): 313-326
DOI : 10.3897/zse.98.90032
Authors : Piyatida Pimvichai, Henrik Enghoff, Somsak Panha, Thierry Backeljau : A new genus of the millipede family Pseudospirobolellidae, Siliquobolellus gen. nov., is described from limestone mountains in Thailand, based on three new species, viz. Siliquobolellus amicusdraconis gen. et sp. nov. from Uthaithani Province, Siliquobolellus constrictus gen. et sp. nov. from Prachuap Khiri Khan Province and Siliquobolellus prasankokae gen. et sp. nov. (type species) from Lampang Province. The descriptions are based on gonopod morphology and mitochondrial DNA data (COI barcodes). The COI barcodes grouped the three new species in a well-supported Siliquobolellus gen. nov. clade. The mean interspecific COI sequence divergence among the three new species was 12% (range: 8–15%). The mean intergeneric COI sequence divergence between Siliquobolellus gen. nov., Coxobolellus Pimvichai, Enghoff, Panha & Backeljau, 2020, and Pseudospirobolellus Carl, 1912 was 19% (range: 14–23%). Three conspicuous gonopodal synapomorphies differentiate Siliquobolellus gen. nov. from other pseudospirobollellid genera: (1) the telopodital part of the posterior gonopod forms a deep concavity, (2) the telopodite of the anterior gonopod is directed distad and does not reach the tip of the coxal part of the anterior gonopod, and (3) the tip of the anterior gonopod coxa is narrowed, curving mesad. As such, the monophyly of the new genus is well supported by both morphological and mitochondrial DNA data. A distribution map and an identification key to the species are provided. HTML XML PDF
PubDate: Fri, 19 Aug 2022 11:09:44 +030
- Pycnogonida (Arthropoda) from Museu de Ciências Naturais, Rio
Grande do Sul, Brazil
Abstract: Zoosystematics and Evolution 98(2): 305-312
DOI : 10.3897/zse.98.83671
Authors : Rudá Amorim Lucena, Martin Lindsey Christoffersen : Five species were identified in the studied collection: Colossendeis megalonyx Hoek, 1881, first record for Uruguay, Ascorhynchus corderoi du Bois-Reymond Marcus, 1952 and Pallenopsis candidoi Mello-Leitão, 1949, with extended ranges, Pallenopsis patagonica (Hoek, 1881), a species complex recently analysed with molecular data and Ammothea tetrapoda, recorded previously for Uruguayan waters. Our study clarifies records based on morphology, provides new data on distributions and species ranges and correlates species with ecological conditions. HTML XML PDF
PubDate: Wed, 20 Jul 2022 13:23:54 +030
- Two new species of the genus Floresorchestia (Crustacea, Amphipoda,
Talitridae) from Amphawa Estuary, Samut Songkhram Province, Thailand
Abstract: Zoosystematics and Evolution 98(2): 285-303
DOI : 10.3897/zse.98.83749
Authors : Anotai Suklom, Tosaphol Saetung Keetapithchayakul, Azman Abdul Rahim, Koraon Wongkamhaeng : Two new species of Floresorchestia (Crustacea: Amphipoda) are described from Amphawa Estuary, Samut Songkhram Province, Thailand. Floresorchestia amphawaensis sp. nov. is a riparian-hoppers living near agricultural and urban areas, being distinguished by the following character states: left mandible lacinia mobilis 4-dentate; gnathopod 2 palm reaching about 34%; telson as broad as long, with four robust setae per lobe. Floresorchestia pongrati sp. nov. are described as riparian-hoppers living in the moist area near Mae Klong canal banks with a unique left mandible lacinia mobilis 5-dentate; gnathopod 2 palm reaching 30% and telson with seven robust setae per lobe. The status and the problem of diagnostic character states of the genus Floresorchestia are discussed. HTML XML PDF
PubDate: Fri, 15 Jul 2022 17:37:31 +030
- On the edge of the Shivaliks: An insight into the origin and taxonomic
position of Pakistani toads from the Duttaphrynus melanostictus complex
(Amphibia, Bufonidae)
Abstract: Zoosystematics and Evolution 98(2): 275-284
DOI : 10.3897/zse.98.79213
Authors : Daniel Jablonski, Rafaqat Masroor, Sylvia Hofmann : The common Asian toad Duttaphrynus melanostictus (Schneider, 1799) complex has a wide distribution ranging from western foothills of the Himalaya to the easternmost range of the Wallacea, with the evidence of human-mediated introductions to some other areas. In the entire distribution range, the complex is formed by several evolutionary clades, distributed mostly in South-East Asia with unresolved taxonomy. In the northwestern edge of its distribution (Pakistan), the name D. melanostictus hazarensis (Khan, 2001) has been assigned to local populations but its biological basis remained, so far, understudied and unvalidated. Therefore, we re-evaluated the available genetic data (mitochondrial and nuclear) to show the relationships between Pakistani populations (including the type locality of D. m. hazarensis) and others from across the range. Our results showed that Pakistani populations are associated with one, deeply diverged, well-supported and widely distributed clade (so-called Duttaphrynus sp. 1 according to 16S, or clade B based on tRNAGly-ND3), that has already been detected in previous studies. This clade is further distributed in India, Nepal, Bangladesh, Malaysia, Singapore, and Indonesia and is characterized by a low level of genetic variability. This further suggests that both natural, as well as potential human-mediated dispersal, might have played an important role in setting up the current phylogeographic and distribution pattern of this clade. The clade is deeply divergent from other clades of the complex and represents a taxonomically unresolved entity. We here argue that the clade Duttaphrynus sp. 1/B represents a distinct species for which the name Duttaphrynus bengalensis (Daudin, 1802) comb. nov. is applicable, while the description of D. m. hazarensis does not satisfy the rules of the International Code of Zoological Nomenclature. HTML XML PDF
PubDate: Wed, 13 Jul 2022 16:17:13 +030
- Mitochondrial characteristics of Pseudohynobius flavomaculatus a protected
salamander in China, and biogeographical implications for the family
Hynobiidae (Amphibia, Caudata)
Abstract: Zoosystematics and Evolution 98(2): 263-274
DOI : 10.3897/zse.98.66578
Authors : Yu Zhang, Meng Wang, Ruli Cheng, Yang Luo, Yingwen Li, Zhihao Liu, Qiliang Chen, Yanjun Shen : Pseudohynobius flavomaculatus a provincially-protected salamander species, inhabits mountainous areas of Chongqing and surrounding provinces in China. In the present study, the complete mitochondrial genome of P. flavomaculatus was sequenced and analyzed. The mitogenome is 16,401 bp in length and consisted of 13 protein-coding genes, 2 ribosomal RNA genes, 22 transfer RNA genes, and a control region. We performed a novel phylogenetic analysis, which demonstrated a sister relationship between P. flavomaculatus and P. jinfo. The 95% confidence interval around our new divergence date estimate suggest that Hynobiidae originated at 101.62–119.84 (mean=110.87) Ma. Species within Hynobiidae diverged successively in the Cenozoic era, and hynobiid speciation coincides primarily with geologic events. Our biogeographical inference demonstrates that nearly all early hynobiids divergences correspond to geological estimates of orogeny, which may have contributed to the notably high dN/dS ratio in this clade. We conclude that orogeny is likely a primary, dynamic factor, which may have repeatedly initiated the process of speciation in the family Hynobiidae. HTML XML PDF
PubDate: Wed, 13 Jul 2022 16:16:36 +030
- Rediscovery after 25 years – first photographic documentation and DNA
barcoding of the deep-sea pycnogonid species Ascorhynchus hippos Turpaeva,
1994 (Chelicerata, Pycnogonida, Ascorhynchidae) from the Kuril-Kamchatka
Trench
Abstract: Zoosystematics and Evolution 98(2): 257-262
DOI : 10.3897/zse.98.84864
Authors : Lisa Wolf, Roland R. Melzer, Tobias Lehmann : The female specimen of Ascorhynchus hippos Turpaeva, 1994 was collected in 2015 during the Russian-German deep-sea expedition SokhoBio (Sea of Okhotsk Biodiversity Studies) at the abyssal western slope of the Kuril-Kamchatka Trench at a depth of 4469 m using a camera-epibenthic sledge. It is the first record of this species since the discovery of one female holotype and one male paratype in 1990. Ascorhynchus hippos is easily distinguishable from its congeners by the two prominent tubercles above the chelifore insertions, the absence of the eye tubercle and eyes, and the tubercles on the mid-dorsal trunk segments and the lateral processes. Here we present the first photographic documentation of all three known specimens of A. hippos and the COI barcode of the new specimen is also provided. HTML XML PDF
PubDate: Wed, 6 Jul 2022 16:38:50 +0300
- A new brackish tanaidacean, Sinelobus kisui sp. nov. (Crustacea,
Peracarida, Tanaidacea), from Japan, with a key to Sinelobus species and
barcode information from two loci
Abstract: Zoosystematics and Evolution 98(2): 245-256
DOI : 10.3897/zse.98.84818
Authors : Kyoko Hirano, Keiichi Kakui : We describe the new brackish tanaidid species Sinelobus kisui sp. nov. from Hagi, Yamaguchi, Japan. Sinelobus kisui is similar to S. barretti and S. vanhaareni in having antennal article 2 with one outer distal seta, the dorsodistal crotchet on pereopods 2 and 3 carpi shorter than half propodus length, and pereopodal carpi 2–6 with five distal crotchets, but differs from them in having (1) the inner of two ventro-subdistal circumplumose setae on the maxillipedal endite longer than the outer; (2) the maxillipedal endite with one mid-inner spiniform seta; (3) the pereopod-1 propodus with one middle setulate seta; and (4) the pleopod-1 protopod lacking inner plumose setae. Our study confirmed that character states of the chelipeds in strongly dimorphic males are useful in Sinelobus taxonomy. We determined partial sequences for the cytochrome c oxidase subunit I (COI; cox1) and 18S rRNA (18S) genes in S. kisui for future DNA barcoding and phylogenetic analyses. Morphological and/or molecular data reveal that S. kisui also occurs in Kagawa and Osaka, Japan. A key to species in Sinelobus is provided. HTML XML PDF
PubDate: Wed, 29 Jun 2022 14:18:21 +030
- Addition to the known diversity of Chinese freshwater planarians:
integrative description of a new species of Dugesia Girard, 1850
(Platyhelminthes, Tricladida, Dugesiidae)
Abstract: Zoosystematics and Evolution 98(2): 233-243
DOI : 10.3897/zse.98.83184
Authors : Yi Liu, Xiao-Yu Song, Zhong-Yin Sun, Wei-Xuan Li, Ronald Sluys, Shuang-Fei Li, An-Tai Wang : The present paper describes a new species of freshwater flatworm of the genus Dugesia from Guizhou province, China, based on an integrative approach, combining morphological, histological and molecular information. This new species, Dugesia gemmulata Sun & Wang, sp. nov., is characterized by the ventral part of the most posterior section of the bursal canal being provided with a voluminous, ellipsoidal muscular swelling; sac- or egg-shaped seminal vesicle situated near the ventral body surface in anterior portion of the penis bulb; postero-dorsal wall of seminal vesicle communicating with a narrow duct that first runs almost vertically but then shows a postero-dorsally directed loop before connecting with a small diaphragm; an ejaculatory duct opening terminally or subterminally; an asymmetrical penis papilla, with its dorsal lip being provided with a bump; oviducts opening asymmetrically into female copulatory apparatus, with the left oviduct opening into the common atrium and the right oviduct opening into the vaginal section of the bursal canal. Molecular phylogenetic analyses revealed that the new species belongs to a clade comprising species from the Australasian and Oriental regions, while it shares a sister-group relationship with D. umbonata Song & Wang, 2020, a species characterized by a muscular swelling on the dorsal side of its bursal canal. HTML XML PDF
PubDate: Wed, 29 Jun 2022 14:17:31 +030
- Rediscovery, redescription and identity of Pristimantis nebulosus
(Henle, 1992), and description of a new terrestrial-breeding frog from
montane rainforests of central Peru (Anura, Strabomantidae)
Abstract: Zoosystematics and Evolution 98(2): 213-232
DOI : 10.3897/zse.98.84963
Authors : Jörn Köhler, Ernesto Castillo-Urbina, César Aguilar-Puntriano, Miguel Vences, Frank Glaw : The taxonomic status of the strabomantid frog species Pristimantis nebulosus (Henle, 1992), originating from the southern Cordillera Azul in central Peru, is investigated based on examination of the holotype and its comparison with freshly collected topotypic material. Following current standards, we provide a redescription of the holotype. It is in a rather poor state and exhibits certain damages and preservation artifacts, conditions that have hampered an allocation of this nominal taxon to any known living population of Pristimantis in the past. Our detailed specimen-to-specimen comparison provided morphological evidence for the conspecifity of the holotype and freshly collected topotypes. Molecular phylogenetic analysis, based on the mitochondrial 16S gene fragment places P. nebulosus in the P. conspicillatus species group, being closely related to P. bipunctatus and an undescribed candidate species from the Cordillera de Carpish. From both, P. nebulosus differs by considerable divergence in the 16S gene (p-distance 4.1–6.2%). Based on the specimens available, we provide an updated diagnosis for P. nebulosus, compare it to other species in the P. conspicillatus group and describe its advertisement call. In addition, we describe and name the closely related candidate species from the Cordillera de Carpish. It is sister to P. bipunctatus and P. nebulosus, but differs from both mainly by its tuberculate dorsal skin (versus shagreen) and divergence in the 16S gene (3.3–4.1%). We briefly discuss cryptic species diversity in the P. conspicillatus and P. danae species groups and provide justification for the description of a singleton species. HTML XML PDF
PubDate: Fri, 24 Jun 2022 18:43:53 +030
- Paracapoeta, a new genus of the Cyprinidae from Mesopotamia, Cilicia and
Levant (Teleostei, Cypriniformes)
Abstract: Zoosystematics and Evolution 98(2): 201-212
DOI : 10.3897/zse.98.81463
Authors : Davut Turan, Cüneyt Kaya, İsmail Aksu, Yusuf Bektaş : The molecular and morphological studies carried out within the scope of this study revealed that the scrapers, known as the Mesopotamian group, belong to a different genus. The Paracapoeta gen. nov., from the Mesopotomia and Levant, is distinguished from Capoeta and Luciobarbus species by the presence of a strong ligament between the base of the last simple and the first branched rays of the dorsal-fin (vs. no or a very weak ligament). The Paracapoeta further differs from Capoeta by the last simple dorsal-fin ray strongly ossified in adult specimens (more than 75%, vs. less than 75%). The Paracapoeta further differs from Luciobarbus by the lower lip with horny layer (vs. fleshy lips). The molecular phylogeny based on the combined dataset (COI + Cytb, 1312 bp.) showed that the genus Paracapoeta was recovered from the other groups in the subfamily Barbinae with high bootstrap and posterior probability values (BP: 94%, PP: 0.96). Also, Paracapoeta and Capoeta are well differentiated by an average genetic distance of 8.02±0.78%. The morphological and molecular findings have largely overlapped each other. Besides, Capoeta turani is treated as a synonym of Capoeta erhani. HTML XML PDF
PubDate: Tue, 21 Jun 2022 17:02:35 +030
- Taxonomy of the genus Cyrtogrammomma Pocock, 1895 (Araneae,
Mygalomorphae, Theraphosidae) with a description of a new species from
Brazil
Abstract: Zoosystematics and Evolution 98(2): 181-199
DOI : 10.3897/zse.98.85212
Authors : Hector Manuel Osorio Gonzalez-Filho, Rafael Fonseca-Ferreira, Antonio Domingos Brescovit, José Paulo Leite Guadanucci : The genus Cyrtogrammomma Pocock, 1895 was proposed based on specimen samples from Monte Roraima, Guyana, and allocated in the family Barychelidae. However, the most recent cladistic analysis transferred Cyrtogrammomma to Theraphosidae. Herein, we amended the diagnosis and description of C. monticola, providing a redescription of the male, and new illustrations, including the description of a new cuticular structure consisting of thick and stiff setae on dorsal metatarsi I and II of females. Moreover, we diagnose, describe and illustrate a new species of Cyrtogrammomma from northeastern Brazil: C. frevo sp. nov. In addition, we provide an identification key, new distribution records of the genus in the states of Alagoas, Bahia, Pará, and Pernambuco, in Brazil, and the first record for the genus in caves. HTML XML PDF
PubDate: Fri, 17 Jun 2022 12:49:59 +030
- A new Leptobrachella species (Anura, Megophryidae) from South China,
with comments on the taxonomic status of L. chishuiensis and L. purpurus
Abstract: Zoosystematics and Evolution 98(1): 165-180
DOI : 10.3897/zse.98.73162
Authors : Jian Wang, Shuo Qi, Ke-Yuan Dai, Zhi-Tong Lyu, Zhao-Chi Zeng, Hong-Hui Chen, Yuan-Qiu Li, Yong-You Zhao, Yun-Ze Wang, Ying-Yong Wang : A new species of Leaf Litter Toad, Leptobrachella shimentaina sp. nov., is described from the Shimentai and Luokeng nature reserves of northern Guangdong Province, southern China. The new taxon can be distinguished from all recognized congeners by a combination of discrete morphological character state differences relating to its small body size (SVL 26.4–28.9 mm in six adult males, 30.1 and 30.7 mm in two adult females); a number of apparently fixed color pattern character differences (including eye coloration and color pattern features from dorsal, ventral, and dorsolateral surfaces of its head, body, limbs, and ventrum); the morphological and discrete characteristics of the external phenotype (the skin texture of dorsum and ventrum, the presence of supra-axillary and ventrolateral glands, the wide dermal fringes and rudimentary webbing on toes, and the uninterrupted longitudinal ridges under toes). Two samples of this new species previously were proposed as representing a new, unnamed species. We now substantiate this claim by providing diagnostic comparisons of discrete character differences. In addition, we also discuss taxonomic uncertainty surrounding the identity of two congeners, L. chishuiensis and L. purpurus, which we interpret as indicative of taxonomic inflation in the species-rich subfamily Megophryidae. HTML XML PDF
PubDate: Fri, 3 Jun 2022 08:45:37 +0300
- Phylogenetic relationships of a new catfish of the genus Trichomycterus
(Siluriformes, Trichomycteridae) from the Brazilian Cerrado, and the role
of Cenozoic events in the diversification of mountain catfishes
Abstract: Zoosystematics and Evolution 98(1): 151-164
DOI : 10.3897/zse.98.83109
Authors : Wilson J. E. M. Costa, José Leonardo O. Mattos, Wagner M. S. Sampaio, Patrícia Giongo, Frederico B. de Almeida, Axel M. Katz : The Brazilian Cerrado highlands shelter the headwaters of the three largest South American hydrographic basins, where a great species diversity is concentrated, but some biological groups are still insufficiently known. The focal taxa of this study are trichomycterid catfishes of the subgenus Cryptocambeva, genus Trichomycterus, endemic to mountain areas of south-eastern Brazil. The primary objective of this study is to test through a molecular phylogeny if a new species collected in streams of the upper Rio Paraná basin draining the Serra da Canastra is sister to T. macrotrichopterus, endemic to the upper Rio São Francisco at another facet of the Serra da Canastra, as suggested by morphological data. The analysis corroborated sister group relationships between these two species, besides supporting four main clades in Cryptocambeva, each of them endemic to distinct mountain regions. A time-calibrated analysis supported the divergence timing between the new species and T. macrotrichopterus at the Pliocene, which is chronologically compatible with the final period of intense fluvial configuration re-arrangement, when São Francisco headwater streams were captured by the Paraná basin. The new species herein described is similar to T. macrotrichopterus and distinguished from all other species of Cryptocambeva by having a long pectoral-fin filament. These two species are distinguished from each other by characteristics of the latero-sensory system, colour pattern and bone morphology. HTML XML PDF
PubDate: Mon, 23 May 2022 12:07:58 +030
- Clarifying the type locality of Liotyphlops wilderi (Garman, 1883)
(Serpentes, Anomalepididae), with comments on other reptiles from São
Cyriaco, Minas Gerais
Abstract: Zoosystematics and Evolution 98(1): 129-136
DOI : 10.3897/zse.98.80418
Authors : Henrique C. Costa : The snake species Typhlops wilderi (today Liotyphlops wilderi) was described in 1883 based on specimens from São Cyriaco, in Minas Gerais, Brazil. The name of this type locality has been cited in different ways in the literature, making its geographic location confusing. Solving this question is an important issue for future taxonomy and systematic studies. After searching for information on the collector of the type series of L. wilderi (John Casper Branner) using the Google Scholar database, I found that São Cyriaco was a gold mining company located in the current municipality of Alvorada de Minas. Besides elucidating the type locality of L. wilderi, I searched for reptile specimens collected by Branner, deposited in collections registered at the VertNet Portal and SpeciesLink, and personally examined the extant material from Minas Gerais. HTML XML PDF
PubDate: Thu, 5 May 2022 16:45:20 +0300
- A new genus of Australian orb-weaving spider with extreme sexual size
dimorphism (Araneae, Araneidae)
Abstract: Zoosystematics and Evolution 98(1): 137-149
DOI : 10.3897/zse.98.82649
Authors : Volker W. Framenau, Pedro de S. Castanheira : The new Australian orb-weaving spider genus Mangrovia in the family Araneidae Clerck, 1757 is described. It is characterised by extreme sexual size-dimorphism (eSSD) with females (total length 8–10 mm) ca. 3 to 5 times larger than males (2.5–3 mm). Whilst Mangrovia shares with the informal Australian ‘backobourkiine’ clade a single seta on the male pedipalp patella, the genus is probably more closely related to the ‘zealaraneines’ or associated genera. In addition to eSSD and the single patellar spine, the genus is characterised by a distinct subterminal embolus branch in males. The new genus includes two species: the type species Mangrovia albida (L. Koch, 1871) comb. nov. (= Epeira fastidiosa Keyserling, 1887, new syn.) from Queensland and Mangrovia occidentalis sp. nov. from Western Australia. Both species are apparently coastal and occur in mangroves, but also in riparian woodland. Spiders were found resting in rolled-up leaves adjacent to their orb-web. HTML XML PDF
PubDate: Thu, 5 May 2022 13:36:28 +0300
- Taxonomy and natural history of Cavernocypris hokkaiensis sp. nov., the
first ostracod reported from alpine streams in Japan
Abstract: Zoosystematics and Evolution 98(1): 117-127
DOI : 10.3897/zse.98.80442
Authors : Mizuho Munakata, Hayato Tanaka, Keiichi Kakui : We describe the cypridoidean ostracod Cavernocypris hokkaiensis sp. nov. from riverbed sediments in an alpine stream at an elevation of ca. 1850 m in the Taisetsu Mountains, Hokkaido, Japan. This species differs from congeners in having (1) the outer surface of the carapace smooth, with sparse, tiny setae, but without shallow pits; (2) the carapace elongate rather than triangular in lateral view; (3) the antennula consisting of seven podomeres; (4) first palpal podomere of maxillula with five dorsodistal and one ventro-subdistal setae; (5) the fifth limb lacking setae b and d; and (6) the fifth limb lacking a vibratory plate. We provided the key to the Cavernocypris species. We determined partial sequences for the cytochrome c oxidase subunit I (COI; cox1) and 18S rRNA (18S) genes in C. hokkaiensis. Our sample contained only females, and we obtained a partial 16S rRNA sequence for the endosymbiotic bacterium Cardinium from C. hokkaiensis, indicating the possibility that this ostracod species reproduces parthenogenetically. Our field survey and observations of captive individuals suggested that C. hokkaiensis may be endemic to the Taisetsu Mountains, with a low population density, narrow distributional range, and slow maturation to sexual maturity. HTML XML PDF
PubDate: Tue, 5 Apr 2022 14:27:25 +0300
- A new neotenous genus and species, Deltanthura palpus gen. et sp. nov.
(Isopoda, Anthuroidea, Paranthuridae) from Japan, with a revised key to
the genera in Paranthuridae
Abstract: Zoosystematics and Evolution 98(1): 109-115
DOI : 10.3897/zse.98.81772
Authors : Shoki Shiraki, Michitaka Shimomura, Keiichi Kakui : We describe a new paranthurid isopod genus and species, Deltanthura palpus gen. et sp. nov., collected from a depth of 805–852 m off the southern coast of Mie prefecture, Japan. Deltanthura is similar to Pseudanthura Richardson, 1911 in having a triangular pleotelson, acute mandible with a 3-articulate palp, a maxillipedal endite, and a tapering uropodal exopod, but differs in having eyes and neotenous characters (reduced pereonite 7 and pereopods 7 lacking). Deltanthura and four paranthurid genera (Califanthura Schultz, 1977, Colanthura Richardson, 1902, Cruranthura Thomson, 1946, and Cruregens Chilton, 1882) share neotenous characters, but in Deltanthura the mandible is acute, with a 3-articulate palp and maxillipedal endites are present. Califanthura minuta Kensley & Heard, 1991 may belong in Deltanthura as they share the triangular pleotelson and tapering uropodal exopod, but we refrain from transferring it to Deltanthura as its description lacks the other diagnostic characters of Deltanthura. We provide a revised key to all genera in Paranthuridae Menzies & Glynn, 1968. HTML XML PDF
PubDate: Thu, 31 Mar 2022 08:30:11 +030
- Gobiobotia lii, a new species of gudgeon (Teleostei, Gobionidae) from
the middle Chang-Jiang Basin, central China, with notes on the validity of
G. nicholsi Bănărescu & Nalbant, 1966
Abstract: Zoosystematics and Evolution 98(1): 93-107
DOI : 10.3897/zse.98.80547
Authors : Xiao Chen, Man Wang, Liang Cao, E Zhang : Gobiobotia lii is described from the Qi-Shui, a stream tributary on the northern bank of the middle Chang-Jiang mainstem in Hubei Province and Lake Dongting in Hunan Province, central China. The new species is distinguished from all other congeneric species by possessing a combination of the following characters: a naked region of the abdomen adjacent to the ventral mid-line extending to the vent and the vertebral count (4+31–32). The validity of G. lii is confirmed by its monophyletic nature recovered in a phylogenetic analysis, based on the cyt b gene and its significant sequence divergence with sampled congeneric species. Critical notes were given on the species recognition of historically documented eight-barbel gudgeons co-existing in Lake Dongting. Gobiobotia nicholsi Bănărescu & Nalbant, 1966 should be a valid species distinct from G. filifer (Garman, 1912) and both G. pappenheimi Kreyenberg, 1911 and G. boulengeri (=Xenophysogobio boulengeri (Tchang, 1929)) have an erroneous record from the Lake. HTML XML PDF
PubDate: Tue, 29 Mar 2022 09:27:56 +030
- A new genus name for pygmy lorises, Xanthonycticebus gen. nov. (Mammalia,
primates)
Abstract: Zoosystematics and Evolution 98(1): 87-92
DOI : 10.3897/zse.98.81942
Authors : K. Anne-Isola Nekaris, Vincent Nijman : Lorisiformes are nocturnal primates from Africa and Asia with four genera, with two (Arctocebus and Loris), three (Perodicticus) and nine (Nycticebus) recognised species. Their cryptic lifestyle and lack of study have resulted in an underappreciation of the variation at the species and genus level. There are marked differences between the pygmy slow loris Nycticebus pygmaeus and the other Nycticebus species and, in the past, several authors have suggested that these may warrant recognition at the generic level. We here combine morphological, behavioural, karyotypical and genetic data to show that these contrasts are, indeed, significantly large and consistent. We propose Xanthonycticebus gen. nov. as a new genus name for the pygmy slow lorises and suggest a common name of pygmy lorises. Based on analysis of complete mitochondrial DNA sequences, we calculate the divergence of pygmy from slow lorises at 9.9–10.0%. The median date, calculated for the divergence between Xanthonycticebus and Nycticebus, is 10.5 Mya (range 4.9–21.0 Mya). Xanthonycticebus differs from Nycticebus by showing sympatry with other slow loris species, by habitually giving birth to twins, by showing seasonal body mass and whole body coat colour changes (absent in other species living at similar latitudes) and a multi-male, multi-female social system. Pygmy lorises are easily recognisable by the absence of hair on their ears and more protruding premaxilla. Xanthonycticebus is threatened by habitat loss and illegal trade despite legal protection across their range and all slow lorises are listed on appendix 1 of CITES. The suggested nomenclatural changes should not affect their legal status. HTML XML PDF
PubDate: Wed, 23 Mar 2022 17:19:04 +020
- A new species of Phalotris (Serpentes, Colubridae, Elapomorphini) from
Paraguay
Abstract: Zoosystematics and Evolution 98(1): 77-85
DOI : 10.3897/zse.98.61064
Authors : Paul Smith, Jean-Paul Brouard, Pier Cacciali : A new species of Phalotris from the nasutus group, Phalotris shawnella sp. nov., is described. It can be distinguished from the other members of the group by having the following combination of characters: 1) fifth supralabial in contact with parietal, 2) vertebral stripe present, 3) yellowish nuchal collar (2 or 3 dorsal scales long), 4) dull reddish color of head, 5) broad, solidly or near solidly dark, lateral bands, 6) red-orange ventral scales lightly and irregularly spotted with black mainly on the posterior half of the body and 7) a bilobed, extremely asymmetrical hemipenis, with enlarged, curved, lateral spines. The species is only known from a recent specimen collected in the Cerrado zone of northeastern Paraguay at Rancho Laguna Blanca, San Pedro department, and two photographic records of live specimens from this and an additional locality. Limited ecological data based on observations of a captive individual, and a wild record, are provided, and a conservation assessment is performed for this extremely limited range Paraguayan endemic snake. HTML XML PDF
PubDate: Mon, 7 Mar 2022 17:06:58 +0200
- Pliocene-Pleistocene dispersal bring along low inter species diversity
between Vimba species based on multilocus analysis
Abstract: Zoosystematics and Evolution 98(1): 65-75
DOI : 10.3897/zse.98.76937
Authors : Gökhan Kalaycı : This study investigates phylogenetic and phylogeographic relationships of Vimba species using mitochondrial cytochrome b (cyt b) (1023 bp) and cytochrome c oxidase subunit I (COI) barcoding region (652 bp) genes. Ninety-one samples from 36 populations for the cyt b gene and 67 samples from 20 populations for the COI were analyzed. We identified 29 haplotypes and calculated overall haplotype diversity as Hd: 0.907 ± 0.015 for cyt b. We also identified 13 COI haplotypes and calculated overall haplotype diversity as 0.826 ± 0.026 for this marker. The phylogenetic analysis of Vimba species reveals the presence of four clades, based on concatenated cyt b and COI sequences. The first and second clade consist of Vimba vimba Western lineage, and Vimba vimba Caspian lineage, while the third and fourth clade consist of Vimba mirabilis and Vimba melanops. Based on haplotype network analyses and phylogeographic inferences, the Vimba genus is monophyletic, and its species dispersed in the Pleistocene era. HTML XML PDF
PubDate: Fri, 25 Feb 2022 10:04:28 +020
- New records and a new cave-dwelling species of Agoristenidae
(Arachnida, Opiliones) from Colombia
Abstract: Zoosystematics and Evolution 98(1): 55-63
DOI : 10.3897/zse.98.78202
Authors : Andrés F. García, Alex González Vargas, Miguel Gutiérrez Estrada : Three species of Avima are recorded for the first time from Colombia (La Guajira department): A. venezuelica Soares & Avram, 1981, A. troglobia (Pinto-da-Rocha, 1996), and A. wayuunaiki Sp. nov. Complementary and new descriptions of the species are offered and scanning electron microscopy photographs of the male genitalia of A. troglobia are given. HTML XML PDF
PubDate: Wed, 16 Feb 2022 14:08:36 +020
- A historical specimen of the Fishing Cat, Prionailurus viverrinus
(Bennett, 1833) (Carnivora, Felidae) from Singapore in the zoological
collection of the Naturalis Biodiversity Center, Leiden
Abstract: Zoosystematics and Evolution 98(1): 43-53
DOI : 10.3897/zse.98.76940
Authors : Wan F. A. Jusoh, Marcus A. H. Chua, Piet A. J. Bakker, Pepijn Kamminga, Danièle Weiler, Kees Rookmaaker, Martyn E. Y. Low : The Fishing Cat is not a species known to inhabit Singapore. However, a historical specimen stated to have come from Singapore in 1819 and attributed to Pierre-Médard Diard (RMNH.MAM.59688) is now housed at Naturalis Biodiversity Center, Leiden, the Netherlands. Two hundred years after it was obtained, the mounted skin and skull of this specimen, including specimen labels, were photographed and digitally catalogued. Four sets of annotations from labels and a document detailing records and a receipt of specimens sent by Diard to Leiden are presented to ascertain the specimen’s identity, followed by a historical account of Diard based on a reconstruction of the timeline of key events of Singapore’s natural history. Subsequently, the specimen is examined to confirm its taxonomic identity using comparative morphometrics with other museum specimens, and data associated with the specimen are analysed to determine the origins of this specimen. We conclude that the current evidence does not allow confirmation of the specimen’s status as having been collected in Singapore or being obtained from the pet trade. If the specimen was an imported specimen, it would point towards a trade in rare and large animals in Singapore and the region from as early as 1819. Presently, the specimen remains one of the few extant zoological specimens obtained in Singapore in 1819 and the only one currently known outside of England. HTML XML PDF
PubDate: Fri, 21 Jan 2022 10:32:25 +020
- A new slippery frog (Amphibia, Conrauidae, Conraua Nieden, 1908) from the
Fouta Djallon Highlands, west-central Guinea
Abstract: Zoosystematics and Evolution 98(1): 23-42
DOI : 10.3897/zse.98.76692
Authors : Karla Neira-Salamea, Joseph Doumbia, Annika Hillers, Laura Sandberger-Loua, N’Goran G. Kouamé, Christian Brede, Marvin Schäfer, David C. Blackburn, Michael F. Barej, Mark-Oliver Rödel : We describe a new species of the genus Conraua from the Fouta Djallon Highlands in Guinea. The species is recognised as distinct from nominotypical C. alleni, based on morphological evidence and is supported by a recent species delimitation analysis, based on DNA sequence data. The new species is distinguished from its congeners by the unique combination of the following characters: medium body size, robust limbs, only one instead of two palmar tubercles, the first finger webbed to below the first subarticular tubercle, presence of a lateral line system, indistinct tympanum, two subarticular tubercles on fingers III and IV, venter in adults white with dark brown spots or dark brown with grey or whitish spots. The new species differs from all congeners by more than 6% in the DNA sequence of mitochondrial ribosomal 16S. We discuss isolation in Pliocene and Pleistocene forest refugia as a potential driver of speciation in the C. alleni complex. We also emphasise the importance of conserving the remaining forest fragments in the Fouta Djallon Region for the preservation of both its unique biodiversity and its valuable water sources for local people. HTML XML PDF
PubDate: Wed, 19 Jan 2022 16:43:44 +020
- A new catfish of the genus Trichomycterus from the Rio Paraíba do Sul
Basin, south-eastern Brazil, a supposedly migrating species (Siluriformes,
Trichomycteridae)
Abstract: Zoosystematics and Evolution 98(1): 13-21
DOI : 10.3897/zse.98.72392
Authors : Wilson J. E. M. Costa, Axel M. Katz : A new species of the catfish genus Trichomycterus is described from the Rio Paraíba do Sul, south-eastern Brazil. This species exhibits some morphological character states that are unique amongst congeners, including a robust opercle and a long interopercle with numerous odontodes (50–60 opercular and 90–100 interopercular), a black bar on the basal portion of the caudal fin and a dark brown flank with a well delimited dorsal yellow stripe. It also exhibits some morphological traits that are uncommon amongst congeners, such as the presence of nine pectoral-fin rays. The presence of a shallow hyomandibular outgrowth and a ventrally expanded pre-opercular ventral flap suggests that this species is closely related to T. melanopygius, T. pradensis and T. tete. The new species also differs from T. melanopygius, T. pradensis and T. tete by having an emarginate caudal fin and a single median supra-orbital pore S6. Anecdotal evidence suggests that T. largoperculatus and T. pradensis have migratory habits, a condition not previously reported for eastern South American trichomycterines. HTML XML PDF
PubDate: Fri, 14 Jan 2022 11:05:05 +020
- Grismadox gen. nov., a new Neotropical genus of ant-resembling spiders
(Araneae, Corinnidae, Castianeirinae), including the description of two
new species from Bolivia and Paraguay
Abstract: Zoosystematics and Evolution 98(1): 1-11
DOI : 10.3897/zse.98.76677
Authors : Brogan L. Pett, Gonzalo D. Rubio, Robert Perger : A new genus and two new species of ant-resembling castianeirine spiders are described from the Neotropics. Grismadox gen. nov. comprises four species: Grismadox baueri sp. nov., and Grismadox mazaxoides (Perger & Duperré, 2021) comb. nov. from Bolivia, and Grismadox karugua sp. nov. (type species) and Grismadox mboitui (Pett, 2021) comb. nov. from Paraguay. All species are diagnosed and the new species are described and illustrated. Available ecological data suggests that all four species are primarily epigeal and inhabit Grassland and savannah type habitats. HTML XML PDF
PubDate: Fri, 7 Jan 2022 13:25:55 +0200
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