Bulletin of the Southern California Academy of Sciences
Open Access journal
ISSN (Print) 0038-3872
Published by Southern California Academy of Sciences [1 journal]
- Notes on the Association Between Hyperoche medusarum A. Agassiz
Authors: Gary J. Brusca
PubDate: Thu, 18 Dec 2014 08:27:13 PST
- A Second Species of Gerstaeckeria (Coleoptera: Curculionidae:
Cryptorhynchinae) from Mainland South America
Authors: Elbert L. Sleeper
Abstract: A second species of Gerstaeckeria is reported from mainland South America. G. obrieni is described from Viche, Esmeraldas Province, Ecuador, where it was encountered in a sparse agriculture region beneath Opuntia bella. The type locality is some 1400 km northwest of the previously known South American range of the genus. Other species are known from Peru, Galapagos Islands and Mexico.
PubDate: Thu, 18 Dec 2014 08:22:31 PST
- Establishment of Non-Breeding Population of Mercierella enigmatica
(Annelida: Polychaeta) Upstream from a Breeding Population
Authors: Dale Straughan
Abstract: Salinity studies revealed that Mercierella were surviving at salinities too low for the species to breed. The use of a pollutant as a marker, showed that normal water currents can disperse larvae upriver from a breeding population to form a non-breeding population.
PubDate: Wed, 17 Dec 2014 16:17:23 PST
- Some Helminths of the Mudsucker Fish, Cillichthys mirabilis Cooper
Authors: W. E. Martin et al.
Abstract: Gillichthys mirabilis Cooper (mudsucker, long-jawed goby) collected at Baja California, Mexico, near Scammon Lagoon, Salton Sea, Seal Beach and Newport Bay, and San Francisco Bay, California were examined for helminths. The monogenetic trematode, Gyrodactylus sp., was found on the gills of fish from all localities except the Salton Sea. A small digenetic trematode was recovered from the posterior intestine of fish from Baja California and is described as Lecithaster minimus sp. n. Encysted trematodes and larval cestodes also were found in fish from Baja California and Seal Beach. An adult acanthocephalan, Microsentis wardae Martin and Multani, 1966, was found in fish from Baja California. A larval acanthocephalan was recovered from the coelom of hosts from Seal Beach. The nematode, Vasorhabdochona cablei Martin and Zam, 1967, was found in certain blood vessels of fish from Baja California and Seal Beach. Another nematode, Spirocamallanus pereirai (Annereaux, 1946) was found in the intestine of fish from all localities except the Salton Sea.
PubDate: Wed, 17 Dec 2014 16:17:22 PST
- The Role of Elytra in the Movement of Water Over the Surface of Halosydna
brevisetosa (Polychaeta: Polynoidae)
Authors: Jamson Lwebuga-Mukasa
Abstract: In intact worms ciliary tracts on the parapodial lobes and dorsal body surface bring in a flow of water laterally between parapodial lobes and carry it posteriorly along the body dorsolaterally below each row of elytra. The elytrae are not ciliated and exhibit no fanning or pumping motions, but are so shaped as to direct the incoming lateral flow posteriorly, and to contain and direct the posterior flow over the more or less corrugated dorsolateral body surfaces. They also permit the currents to operate effectively when worms are wedged into the secluded crevices and situations which they tend to seek during daylight hours. Thin areas of the body wall are provided with an external flow of water moving in one direction and an internal flow of coelomic fluid moving the opposite direction, and are presumed to function in respiratory gas exchange.
PubDate: Wed, 17 Dec 2014 16:17:21 PST
- Occurrence of a Holotrichous Ciliate in the Intestine of the Polychaete
Hermodice carunculata of Puero Rico
Authors: Ira Jones et al.
Abstract: Hermodice carunculata, a tropical polychaete, was collected along the southern coast of Puerto Rico during April through July 1969. The intestinal contents of the worms were examined and a holotrichous ciliate was found. Ninety-one percent of 121 freshly collected worms harbored the ciliate. Only 35% of 44 worms carried the protozoan when they were maintained in the laboratory longer than three days. The ciliate is pyriform, dorsoventrally flattened and its size ranged from 40.95µ x 34.58µ to 72. 80µ x 45. 50µ.
PubDate: Wed, 17 Dec 2014 16:17:20 PST
- Ancinus Seticomvus, n. sp. (Isopoda), from Santa Barbara, California
Authors: Thomas Trask
Abstract: Ancinus seticomvus, n. sp. is described from two sandy beaches near Santa Barbara, California. It is very similar to A. depressus (Say) from the East coast of North America and the Gulf of Mexico.
PubDate: Wed, 17 Dec 2014 16:17:19 PST
- Four Species of Microtrombicula (Acarina: Trombiculidae) from Mexico and
Authors: James P. Webb Jr. et al.
Abstract: Four species of the genus Microtrombicula Ewing are described: M. nicaraguae n. sp., host Sciurus variegotoides from Nicaragua; M. paralios n. sp., host Pizonyx vivesi from Baja California Norte, Mexico; M. phyllodactyli n. sp., hosts Phyllodactyhis homolepidurus and P. tuberculosus from Sinaloa and Sonora, Mexico; and M. tragidata (Brennan and Jones) NEW COMBINATION (formerly Euschoengastia tragulata) is reported from Baja California, Mexico and Nicaragua.
PubDate: Wed, 17 Dec 2014 16:17:18 PST
- A Survey of Metazoan Parasites Infecting the California (Zalophus
califorianus) and Steller (Eumetopias jubatus) Sea Lion
Authors: Murray D. Dailey et al.
Abstract: Twenty three sea lions (14 Zalophus californianus, 9 Eumetopias jubatus) from the coast of southern and central California were examined for metazoan parasites, Z. californianus was found infected with eight species of helminths (Parafilaroides decorus, Contracaecum oscidatum, Uncinaria sp., Dipetalonema odendhali, Pricetrema zalophi, Stictodora ubelakeri, Diphyllobothrium glaciate and Corynosoma obtuscens), two species of acarines (Orthohalarachne diminuata and Orthohalarachne attenuata), and one species of anopluran (Antarctophthiriiis microchir), E. jubatus contained five species of helminths (Parafilaroides sp., Contracaecum osculatum, Pricetrema zalophi, Diphyllobothrium glaciale, Corynosoma strumosum), two species of acari (Orthohalorachne diminuata, O. attenuata) and one species of anopluran (Antarctophthirius microchir).
PubDate: Wed, 17 Dec 2014 16:17:17 PST
- A Late Pliocene Macrofossil Fauna of Newport Beach, Orange County,
Authors: William J. Zinsmeister
Abstract: A new exposure of fossliferous sandstones of Upper Pliocene age was uncovered during construction work in the spring of 1968. A total 101 species of mollusks and fish remains were recovered. The fauna indicates a moderately deep-water deposit. The presence of a few shallow-water forms suggests a mixing a faunas has occurred.
PubDate: Wed, 17 Dec 2014 16:17:16 PST
PubDate: Wed, 17 Dec 2014 16:17:14 PST
- Tantilla brevicauda: an Addition to the Snake Fauna of Guatemala, with
Comments on Its Relationships
Authors: Larry David Wilson
PubDate: Wed, 17 Dec 2014 16:07:37 PST
- The Status of the Southern Yellow Bat in California
Authors: Suzanne I. Bond
PubDate: Wed, 17 Dec 2014 16:07:36 PST
- A Note on the Hydroid Dipurena reesi Vannucci and a Medusae of the Genus
Cladonema Collected Together Near Los Angles
Authors: J. S. Bullivant
PubDate: Wed, 17 Dec 2014 16:07:35 PST
- The Organic Matrix in Developing Dental Enamel and Dentin Studied by
Scanning Electron Microscopy
Authors: John D. Soule
Abstract: Sections of the matrix of developing dentin and enamel from the foetal pig, alligator lizard, bullfrog and trigger-fish were examined with scanning electron microscopy. The major difference appears to be in the number and size of the tubules that permeate the matrices. The pre-dentin matrix is a loose meshwork of fibrillae surrounding the area of the dentinal tubules. The older circumpulpal dentin intertubular matrix is fibrillar, with the interstices of the matrix filled with an amorphous ground substance. The enamel organic matrix has a fibrillar appearance, with no evidence of rod structure being seen. Observed for the first time is an apparent system of microtubiculi with diameters of about 0.2µ permeating the enamel matrix. Such a system of microtubiculi would provide a pathway for diffusion of inorganic salts and for the removal of soluble organic material during amelogenesis. The similarity of development and structure in amphibians and reptiles suggests the possibility of utilizing these animals in experimental mineralization studies.
PubDate: Wed, 17 Dec 2014 16:07:34 PST
- Revival of the Monotypic Genus Boshellia Ewing, 1950 (Acarina:
Authors: James M. Brennan et al.
Abstract: Boshellia Ewing is resurrected from synonymy and redescribed. The type species Neoschoengastia hirsuta Boshell and Kerr is also redescribed and a lectotype designated.
PubDate: Wed, 17 Dec 2014 16:07:32 PST
- The Effect of Temperature on the Setal Characteristics in Polynoidae
Authors: Kenneth A. Hillger et al.
Abstract: The parapodia of two species of polynoid polychaetes, Halosydna brevisetosa and H. johnsoni, were amputated and allowed to regenerate under varying temperature conditions to test the validity of the structure of the neurosetae as a systematic character. H. brevisetosa has entire neurosetae and inhabits water 5 to 6°C colder than H. jolmsoni. This latter species has bifid neurosetae. Trends toward bifid setae were noted when regeneration of parapodia occurred at warm temperatures and entire setae developed at cold temperatures. The authors concluded that H. jolmsoni is a synonym of H. brevisetosa.
PubDate: Wed, 17 Dec 2014 16:02:11 PST
- Alteration of Neural Spine Height in Certain Early Permian Tetrapods
Authors: Peter Paul Vaughn
Abstract: The neural spines of successive dorsal vertebrae in specimens of the Early Permian cotylosaur Captorhinus aguti alternate in height. The pattern of alternation is almost, but apparently not quite, completely regular. The difference in height between successive neural spines is greater in the anterior part of the column, becoming less pronounced posteriorly. This condition occurs also in another captorhinomorph cotylosaur, Captorhinikos sp., and is similar to the pattern recently described in the microsaur Pantylus cordatus by Carroll. Detailed features of the higher spines indicate that this condition was associated with modification of the system of supraspinal and interspinal ligaments and that these ligaments may have acted as posterior extensions of the nuchal ligament, possibly in correlation with a relatively large skull.
PubDate: Wed, 17 Dec 2014 16:02:10 PST
- A New Spionid (Annelida: Polychaeta) from the Gulf of California
Authors: William J. Light
Abstract: Polydora wobberi sp. nov., is described from Bahia de San Francisquito on the eastern side of Baja California, where it inhabits burrows bored into the white gorgonacean, Lophogorgia sp. It is related to another species of Polydora (in press) which is known only as a commensal within the coenosteum of certain hydrocorals from central California to British Columbia, and to Polydora cavitensis Pillai from the Philippine Islands.
PubDate: Wed, 17 Dec 2014 16:02:09 PST
- Three New Species of Hannemania (Acarina, Trombiculidae) from Amphibians
of Western Mexico
Authors: W. C. Welbourn Jr. et al.
Abstract: Hannemania anurae, n. sp. is described from 1 km NE Santa Lucia, Sinaloa, Mexico, type host Syrrhophiis modestus pallidus; other hosts are Hyla arenicolor, Hyla eximia, Rana montezumae, Rana pipiens, Rana pustulosa, Rana sinaloae, and Rana tarahumarae; and also known from Nayarit and Jalisco. Hannemania monticola, n. sp. is from 1.6 km W Buenos Aires, Durango, Mexico, type host Hyla eximia and other hosts are Ambystoma rosaceum and Tomodactylus saxatilis. Hannemania saxicola, n. sp. is from 23.5 km SW Buenos Aires, Durango, Mexico, type host Tomodactylus saxatilis.
PubDate: Wed, 17 Dec 2014 16:02:07 PST
PubDate: Wed, 17 Dec 2014 16:02:06 PST
- Sexual Differences in Foraging Behavior of White-Headed Woodpeckers
Authors: Robert F. Koch et al.
Abstract: Field observations of White-headed Woodpeckers (Dendrocopos albolarvatus) in Southern California are described. A pronounced sexual difference in foraging behavior was noted with males utilizing the upper portions and cones of Colter Pines and females the lower portions of the main trunk. These differ somewhat from previous observations of other species of sexually dimorphic woodpeckers.
PubDate: Wed, 17 Dec 2014 15:57:08 PST
- A New Subgenus and Two New Species of Hexidionis (Acarina, Trombiculidae)
from North America
Authors: Richard B. Loomis et al.
Abstract: A new subgenus, Zosteridionis, is proposed for five species, including the type species Hexidionis deserti, n. sp., type locality, 3 mi. SE Needles, San Bernardino Co., California, off Dipodomys m. merriami. The subgenus Hexidionis consists of five species including, Hexidionis macropus, n. sp., from La Burrera. Baja California Sur, Mexico, off Peromyscus eremicus.
PubDate: Wed, 17 Dec 2014 15:57:07 PST
- Communication Systems and Organizational Systems in Three Species of
Authors: George F. Fisler
Abstract: Studies of intraspecific agonistic encounters between individuals of Cavia porcellus, Reithrodontoinys inegalotis, and Meriones unguiculotus have shown that the number and complexity of acoustical and visual signals is correlated with the complexity of the organizational system of the species involved. The signals as observed are listed and compared. The greatest number of signals is used by the more complexly organized Cavia, the least by the apparently unorganized Meriones. Relatively complex signals can develop in groups regardless of the primary sensory apparatus utilized.
PubDate: Wed, 17 Dec 2014 15:57:06 PST
- New Myrmecinae (Coleoptera: Curculionidae)
Authors: Elbert L. Sleeper
Abstract: Myrmex vundykei, n. sp. from Prittleville, Arizona and Myrmex setosis, n. sp. from Los Mochis, Sinaloa, Mexico are described and illustrated. The genus Micromyrmex Sleeper is redefined. Oopterinus convexipennis Sleeper is placed in the genus Micromyrmex.
PubDate: Wed, 17 Dec 2014 15:57:05 PST
- A Small Collection of Chiggers from Surinam (Acarina: Trombiculidae)
Authors: James M. Brennan
Abstract: Nine species of chiggers, one of them new, are recorded for the first time from Surinam. Arisocenis, new genus is described for A. amapensis, n. sp., off rodents from northeastern Brazil and Surinam (holotype off Oryzomys macconnelli, Amapa, Brazil), and A. hertigi (Brennan and Jones, 1964), new combination.
PubDate: Wed, 17 Dec 2014 15:57:04 PST
- Epicaridea (Isopoda) of Hawaii
Authors: Charles G. Danforth
Abstract: A new form of the bopyrid lonella is described. lonella murchisoni, n. sp. is the sixth species of parasitic isopod in the Epicaridea suborder to be reported from the State of Hawaii, and is the first of this genus to be found outside of Chile.
PubDate: Wed, 17 Dec 2014 15:22:00 PST
- Trace Fossils of Trilobites from the Deadwood Formation (Upper Cambrian)
of Western South Dakota
Authors: George Callison
Abstract: Tracks of a vagile, epipsammitic trilobite are reported from the Deadwood Formation (Upper Cambrian) of the Black Hills. A new genus, with Ixalichnus enodius as the type species, has been established for these tracks. The tracks suggest that /. enodius usually swam rather than crawled. This is the first report of tracks of trilobites from the Deadwood Formation. The tracks are associated with a Cruziana facies.
PubDate: Wed, 17 Dec 2014 15:21:58 PST
- The Hylaeus of the Bonin Islands, Western Pacific Ocean (Hymenoptera
Authors: Roy R. Snelling
Abstract: Four species of Hylaeus are known to occur on the Bonin Islands: H. (Paraprosopis) yasumatsui, n. sp., H. ikedai (Yasumatsu), H. ( Nesoprosopis) honinensis Yasumatsu and H. incoinitatits, n. sp. These bees appear to represent a relict fauna with relationships from the Palearctic, Micronesian and Oriental Regions. The zoogeographic peculiarities of each species are discussed. All species are described and illustrated in detail and a key for their separation is provided.
PubDate: Wed, 17 Dec 2014 15:21:57 PST
PubDate: Wed, 17 Dec 2014 15:21:56 PST