Skip to main content Skip to main navigation menu Skip to site footer
Responsive image
Issue: Vol. 5336 No. 4: 24 Aug. 2023
Type: Article
Published: 2023-08-24
DOI: 10.11646/zootaxa.5336.4.8
Page range: 577-589
Abstract views: 734
PDF downloaded: 26

Capropodocerus, a new genus in Podoceridae (Crustacea: Amphipoda) from Japan, with descriptions of two new species

Department of Natural History Sciences; Graduate School of Science; Hokkaido University; Sapporo; Japan
Department of Biological Sciences; Faculty of Science; Hokkaido University; Sapporo; Japan
Department of Biological Sciences; Faculty of Science; Hokkaido University; Sapporo; Japan
Crustacea Caprelloidea Deep sea Malacostraca Pacific Peracarida Senticaudata

Abstract

We establish the new podocerid genus Capropodocerus gen. nov. for the two new species Capropodocerus tagamaru gen. et sp. nov. (collected from 775–800 m depth in the Kumano Sea, Japan) and Capropodocerus kamaitachi gen. et sp. nov. (collected from 840–873 m depth off the eastern coast of Miyagi, Japan). Capropodocerus shares elongate pereonites 1–3 with Neoxenodice but differs from the latter in lacking uropod 2 and in having pereonite 3 at least twice as long as pereonite 4. Capropodocerus is also similar to Laetmatophilus and Leipsuropus in having only two pairs of uropods but differs from them in having i) pereonite 1 longer than the head and ii) pereonite 3 at least twice as long as pereonite 4; Capropodocerus has three urosomes and Laetmatophilus has two urosomes. The two species in Capropodocerus differ in i) the length ratio of the antenna 1 peduncle to the flagellum, ii) the shape of the gnathopod 2 palm, iii) the presence or absence of a mid-posterior triangular projection on the gnathopod 2 dactylus, and iv) the length ratio of the basis to the merus of pereopod 3. A key to all genera in Podoceridae is provided.

 

References

  1. Akiyama, T., Shimomura, M. & Nakamura, K. (2008) Collection of deep-sea small arthropods: gears for collection and processing of samples on deck. Taxa, 24, 69–74. [in Japanese]
  2. Amon, D.J., Ziegler, A.F., Drazen, J.C., Grischenko, A.V., Leitner, A.B., Lindsay, D.J., Voight, J.R., Wicksten, M.K., Young, C.M. & Smith, C.R. (2017) Megafauna of the UKSRL exploration contract area and eastern Clarion-Clipperton Zone in the Pacific Ocean: Annelida, Arthropoda, Bryozoa, Chordata, Ctenophora, Mollusca. Biodiversity Data Journal, 5, e14598. https://doi.org/10.3897/BDJ.5.e14598
  3. Arai, T., Ohno, Y. & Tomikawa, K. (2022) A new species of the genus Podocerus from the Seto Inland Sea, Japan (Crustacea, Amphipoda, Podoceridae). ZooKeys, 1128, 99–109. https://doi.org/10.3897/zookeys.1128.91155
  4. Ariyama, H. (2012) Two new species of the genus Leipsuropus (Crustacea: Amphipoda: Podoceridae) from Japanese and Korean waters. Zootaxa, 3485 (1), 41–55. https://doi.org/10.11646/zootaxa.3485.1.3
  5. Ariyama, H. & Hoshino, O. (2020) A new superfamily, family, genus and species of marine amphipod, Protodulichia scandens, from Japan (Crustacea: Amphipoda: Senticaudata: Corophiida). Journal of Natural History, 53, 2467–2477. https://doi.org/10.1080/00222933.2019.1704588
  6. Barnard, J.L. & Clark, J. (1985) A new sea-cave amphipod from Bermuda (Dulichiidae). Proceedings of the Biological Society of Washington, 98, 1048–1053.
  7. Barnard, J.L. & Karaman, G.S. (1991) The families and genera of marine gammaridean Amphipoda (except marine gammaroids). Parts 1 and 2. Records of the Australian Museum, 13 (Supplement), 1–866. https://doi.org/10.3853/j.0812-7387.13.1991.367
  8. Boeck, A. (1871) Crustacea amphipoda borealia et arctica. Brøgger & Christie, Christiania, 200 pp. https://doi.org/10.5962/bhl.title.2056
  9. Bruzelius, R.M. (1859) Bidrag till Kännedomen om Skandinaviens Amphipoda Gammaridea. Kongliga Svenska Vetenskaps-Akademiens Handlingar, Ny Följd, 3, 1–104, 4 pls. https://doi.org/10.5962/bhl.part.28297
  10. Chapman, J.W. (2007) Gammaridea. In: Carlton, J.T. (Ed.), The Light and Smith manual: intertidal invertebrates from central California to Oregon. 4th edition. University of California Press, Berkeley, California, pp. 545–611.
  11. Chevreux, E. (1911) Campagnes de la Melita les Amphipodes d’Algérie et de Tunisie. Mémoires de la Société Zoologique de France, 23, 145–285, pls. 6–20. https://doi.org/10.5962/bhl.title.15982
  12. Copilaş-Ciocianu, D., Borko, Š. & Fišer, C. (2020) The late blooming amphipods: global change promoted post-Jurassic ecological radiation despite Palaeozoic origin. Molecular Phylogenetics and Evolution, 143, 106664. https://doi.org/10.1016/j.ympev.2019.106664
  13. Dana, J.D. (1852) On the classification of the Crustacea Choristopoda or Tetradecapoda. American Journal of Science and Arts, Series 2, 14 (Appendix), 297–316.
  14. Dana, J.D. (1853) Crustacea. Part II. United States Exploring Expedition during the years 1838, 1839, 1840, 1841, 1842 under the command of Charles Wilkes, U.S.N., 14, 691–1618.
  15. Haswell, W.A. (1885) Notes on the Australian Amphipoda. The Proceedings of the Linnean Society of New South Wales, 10, 95–114. https://doi.org/10.5962/bhl.part.17903
  16. Hughes, L.E. (2016) Designation of neotypes for Cyrtophium orientale Dana, 1853, Podocerus brasiliensis (Dana, 1853) and P. cristatus (Thomson, 1879) and the description of a new species Podocerus cyrenensis (Crustacea: Amphipoda: Podoceridae). Raffles Bulletin of Zoology, 34 (Supplement), 312–330.
  17. Iwasa-Arai, T. & Serejo, C.S. (2018) Phylogenetic analysis of the family Cyamidae (Crustacea: Amphipoda): a review based on morphological characters. Zoological Journal of the Linnean Society, 184, 66–94. https://doi.org/10.1093/zoolinnean/zlx101
  18. Ito, A., Aoki, M.N., Yahata, K. & Wada, H. (2011) Complicated evolution of the caprellid (Crustacea: Malacostraca: Peracarida: Amphipoda) body plan, reacquisition or multiple losses of the thoracic limbs and pleons. Development Genes and Evolution, 221, 133–140. https://doi.org/10.1007/s00427-011-0365-5
  19. Kakui, K. & Angsupanich, S. (2012) Birdotanais songkhlaensis, a new genus and species of Nototanaidae (Crustacea: Tanaidacea) from Thailand. Raffles Bulletin of Zoology, 60, 421–432.
  20. Laubitz, D.R. (1983) A revision of the family Podoceridae (Amphipoda, Gammaridea). Australian Museum Memoir, 18, 77–86. https://doi.org/10.3853/j.0067-1967.18.1984.373
  21. Laubitz, D.R. (1993) Caprellidea (Crustacea: Amphipoda): towards a new synthesis. Journal of Natural History, 27, 965–976. https://doi.org/10.1080/00222939300770591
  22. Leach, W.E. (1814) Crustaceology. In: Brewster, D. (Ed.), Edinburgh encyclopaedia. Vol. 7. Blackwood, Edinburgh, pp. 383–429.
  23. LeCroy, S.E. (2000) An illustrated identification guide to the nearshore marine and estuarine gammaridean Amphipoda of Florida. Vol. I. Families Gammaridae, Hadziidae, Isaeidae, Melitidae and Oedicerotidae. Florida Department of Environmental Protection, Tallahassee, Florida, 195 pp.
  24. Lowry, J.K. & Myers, A.A. (2013) A phylogeny and classification of the Senticaudata subord. nov. (Crustacea: Amphipoda). Zootaxa, 3610 (1), 1–80. https://doi.org/10.11646/zootaxa.3610.1.1
  25. Matsumoto, Y., Kajihara, H. & Kakui, K. (2023) A new species of Leipsuropus Stebbing, 1899 (Amphipoda: Podoceridae) from Japan. Nauplius, 31, e2023005. https://doi.org/10.1590/2358-2936e2023005
  26. Myers, A.A. & Lowry, J.K. (2003) A phylogeny and a new classification of the Corophiidea (Amphipoda). Journal of Crustacean Biology, 23, 235–485. https://doi.org/10.1163/20021975-99990353
  27. Rasband, W.S. (2022) ImageJ. Version 1.53. Available from: https://imagej.nih.gov/ij/ (accessed 24 March 2022)
  28. Schellenberg, A. (1926) Die Caprelliden und Neoxenodice caprellinoides n. g. n. sp. der Deutschen Südpolar-Expedition 1901–1903. Deutsche Südpolar-Expedition 1901–1903, 18, 463–476.
  29. Stebbing, T.R.R. (1888) Report on the Amphipoda collected by H.M.S. Challenger during the years 1873–1876. In: Thomson, C.W. & Murray, J. (Eds.), Report on the scientific results of the Voyage of H.M.S. Challenger during the Years 1873–1876, Zoology. Vol. XXIX. Her Majesty’s Stationery Office, London, pp. i–xxiv + 1–1737, pls. I–CCX + map.
  30. Stebbing, T.R.R. (1899) On the true Podocerus and some new genera of amphipods. Journal of Natural History, 3, 237–241. https://doi.org/10.1080/00222939908678113
  31. Stebbing, T.R.R. (1906) Crustacea. Amphipoda I. Gammaridea. In: Schulze, F.E. (Ed.), Das Tierreich. Eine Zusammenstellung und Kennzeichnung der rezenten Tierformen. R. Friedländer und Sohn, Berlin, pp. i–xxxix + 1–806.
  32. Tomikawa, K., Yanagisawa, M., Higashiji, T., Yano, N. & Vader, W. (2019) A new species of Podocerus (Crustacea: Amphipoda: Podoceridae) associated with the whale shark Rhincodon typus. Species Diversity, 24, 209–216. https://doi.org/10.12782/specdiv.24.209