Ostracoda (Myodocopina) of the SE Australian Continental Slope, Part 1
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* Ostracoda (Myodocopina) of the SE Australian Continental Slope, Part 1 LOUIS S. KORNICKER m i SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY • NUMBER 553 SERIES PUBLICATIONS OF THE SMITHSONIAN INSTITUTION Emphasis upon publication as a means of "diffusing knowledge" was expressed by the first Secretary of the Smithsonian. In his formal plan for the Institution, Joseph Henry outlined a program that included the following statement: "It is proposed to publish a series of reports, giving an account of the new discoveries in science, and of the changes made from year to year in all branches of knowledge." This theme of basic research has been adhered to through the years by thousands of titles issued in series publications under the Smithsonian imprint, commencing with Smithsonian Contributions to Knowledge in 1848 and continuing with the following active series: Smithsonian Contributions to Anthropology Smithsonian Contributions to Astrophysics Smithsonian Contributions to Botany Smithsonian Contributions to the Earth Sciences Smithsonian Contributions to the Marine Sciences Smithsonian Contributions to Paleobiology Smithsonian Contributions to Zoology Smithsonian Folklife Studies Smithsonian Studies in Air and Space Smithsonian Studies in History and Technology In these series, the Institution publishes small papers and full-scale monographs that report the research and collections of its various museums and bureaux or of professional colleagues in the world of science and scholarship. The publications are distributed by mailing lists to libraries, universities, and similar institutions throughout the world. Papers or monographs'submitted for series publication are received by the Smithsonian Institution Press, subject to its own review for format and style, only through departments of the various Smithsonian museums or bureaux, where the manuscripts are given substantive review. Press requirements for manuscript and art preparation are outlined on the inside back cover. Robert McC. Adams Secretary Smithsonian Institution SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY • NUMBER 553 Ostracoda (Myodocopina) of the SE Australian Continental Slope, Part 1 Louis S. Kornicker SMITHSONIAN INSTITUTION PRESS Washington, D.C 1994 ABSTRACT Kornicker, Louis S. Ostracoda (Myodocopina) of the SE Australian Continental Slope, Part 1. Smithsonian Contributions to Zoology, number 553, 200 pages, 111 figures, 4 tables, 1994.—Thirty-five species (32 new) of bcnthic Myodocopina in 16 genera (4 new) collected at depths of 204-2900 m on the SE Australian continental slope under the auspices of the Museum of Victoria and Victorian Institute of Marine Sciences, Australia, are described and illustrated A comparison of the sensory bristle of the male 1st antenna of species of Rutiderma and Scleraner in the Rutidermatidae indicates that the extent of coverage of the bristle by filaments may be useful in separating males of the two genera. A study of medial sclerites of the protopodites of second antennae indicates that the Cypridinidae and Cylindroleberididae fall into one group, and the Philomedidae, Sarsiellidae, and Rutidermatidae into a second group. Some information is given on eggs, juvenile morphology, parasitic copepods, and gut contents. Eye size is compared to depth. A new subfamily, Metaschismatinae in the Rutidermatidae, is proposed. OFFICIAL PUBLICATION DATE is handstamped in a limited number of initial copies and is recorded in the Institution's annual report, Smithsonian Year. SERIES COVER DESIGN: The coral Montastrea cavernosa (Linnaeus). Library of Congress CaUloging-in-Publication Data Komicker. Louis S., 1919- Ostracoda (Myodocopina) of the SE Australian continental slope, part 1 / Louis S. Kornicker p. cm.—(Smithsonian contributions to zoology ; no. 553) Includes bibliographical references (p. 197). Supt of Docs, no.: I. Myodocopina—Australia, Southeastern. 2. Myodocopina—Australia,Southeastern—Classification. I.Tide. II. Series. QH.S54 no. 553 (QL444.085] 591 s—dc20 93-38048 I595J'3] CIP © The paper used in this publication meets die minimum requirements of die American National Standard for Permanence of Paper for Printed Library Materials Z39.48—1984. Contents Page Introduction 1 Stations 1 Sampling 1 Disposition of Specimens 1 Abbreviations 1 Acknowledgments 3 Suborder MYODOCOPINA Sars, 1866 4 CYPRIDINIDAE Baird, 1850a 4 CYPRIDININAE Baird, 1850a 4 CYPRIDININI Baird, 1850a 4 Pseudodoloria, new genus 4 Pseudodoloria plax, new species 4 Vargula Skogsberg, 1920 12 Key to Species of Vargula in the Vicinity of SE Australia 14 Vargula hex, new species 15 Vargula fugax, new species 23 Vargula stranx, new species 29 Vargula trifax, new species 33 Vargula matrix, new species 41 Vargula vix, new species 47 Vargula psydrax, new species 52 Vargula dentata Kornicker, 1975 59 Vargula rapax, new species 63 Vargula vertex, new species 68 PHILOMEDIDAE Miiller, 1906 73 PHILOMEDINAE Miiller, 1906 73 Philomedes Liljeborg, 1853 73 Key to Species of Philomedes in the Vicinity of SE Australia 73 Philomedes fortax, new species 74 Philomedes ptyx, new species 78 Philomedes pseudolofthousae, new species 81 Philomedes sphinx, new species 85 Philomedes thorax, new species 90 Pleoschisma Brady, 1890 96 Key to Species of Pleoschisma 96 Pleoschisma pnyx, new species 96 Pleoschisma pseudoferox, new species 103 Pleoschisma mindax, new species 105 PSEUDOPHILOMEDINAE Kornicker, 1967 110 Pseudophilomedes Muller, 1893 110 Pseudophilomedes fornix, new species 110 RUTIDERMATIDAE Brady and Norman, 1896 114 RUTIDERMATINAE Brady and Norman, 1896 114 Sensory Bristle of the 5th Joint of the 1st Antenna of the Adult Male .... 114 Scleraner Kornicker, 1982 115 Scleraner trifax, new species 115 METASCHISMATINAE, new subfamily 123 in IV SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY Metaschisma, new genus 123 Metaschisma nex, new species 123 SARSIELLIDAE Brady and Norman, 1896 128 SARSIELLINAE Brady and Norman, 18% 128 Eusarsiella Cohen and Kornicker, 1975 129 Key to Species of Eusarsiella in Collection 129 Eusarsiella bex, new species 129 Eusarsiella fallomagna, new species 135 Eusarsiella edax, new species 140 Eusarsiella iayx, new species 145 Chelicopia Kornicker, 1958 151 Key to Species of Chelicopia 151 Chelicopia pertinex, new species 151 Chelicopia triplex, new species 158 Parasarsiella Poulsen, 1965 161 Parasarsiella poorei, new species 161 DANTYINAE Kornicker and Cohen, 1978 168 Dantya Komicker and Cohen, 1978 168 Dantya tryx, new species 168 Nealella Kornicker and Caraion, 1980 172 Key to Species of Nealella 172 Nealella lux, new species 173 CYLINDROLEBERIDIDAE Mailer, 1906 177 CYLINDROLEBERIDINAE Mailer, 1906 177 Xenoleberis, new genus 177 Key to Species of Xenoleberis 178 Xenoleberis bex, new species 178 CYCLASTEROPINAE Poulsen, 1965 182 CYCLOLEBERIDINI Hartmann, 1974 183 Leuroleberis Kornicker, 1981 183 Leuroleheris mackenziei Kornicker, 1981 183 ASTEROPTERONINAE Komicker, 1981 183 Asteropterygion Kornicker, 1981 183 Asteropterygion magnum (Poulsen, 1965) 183 Macroasteropteron, new genus 183 Macroasteropteron mindax, new species 184 Sclerites of the Protopodite of the Second Antenna 189 Appendix 1: Station Data with Species in Samples 195 Appendix 2: Material from Museum of Victoria "Crustacea" Database 197 Literature Cited 199 Ostracoda (Myodocopina) of the SE Australian Continental Slope, Part 1 Louis S. Kornicker Introduction removed from samples and identified. Specimens of Sarsielli- dae and Cylindroleberididae were also removed and identified This work is a taxonomic report on some (35 species) of the from all samples, except for sample from Slope 40, in which Ostracoda in the suborder Myodocopina collected on the SE they were abundant. Relatively few specimens of Cypridinidae Australian continental slope during 1986 and 1988 by (especially those of the genera Metavargula and Paradoloria) personnel of the Museum of Victoria and the Victorian Institute were removed from samples in which they were abundant The of Marine Sciences. The benthic material was collected in the many juveniles that could not be identified readily have been Tasman Sea between Nowra, near Sydney, New South Wales excluded from the study. In only a few instances did I attempt (35°S), in the north, and the central eastern coast of Tasmania to describe a new species represented in the collection by only (42°S) in the south at depths of 204-2900 m. The distribution juveniles; almost all identifications are based on ovigerous of species with depth is shown in Table 1. It is intended to females. publish descriptions of about 54 additional species in Parts 2 DISPOSITION OF SPECIMENS.—All holotypes have been and 3. The arrangement of sclerites in the protopodite of the deposited in the Museum of Victoria, Abbottsford, Australia. 2nd antenna are discussed herein based on all species in the Some specimens have been deposited at the National Museum collection; undescribed species are left in open nomenclature of Natural History, Smithsonian Institution; these have been (each will be referred to in a synonymy when the species is later assigned USNM numbers. All unnumbered identified speci- described and named). mens as well as unidentified specimens have been returned to STATIONS.—The sedimentology and hydrology of the area, the Museum of Victoria (Appendix 2). Most holotypes have as far as they are known, have been summarized in a paper in been placed in vials with alcohol because appendages mounted preparation by G.C.B. Poore, J. Just, and B. Cohen. The in glycerin dry out in time. stations sampled were on four short