Skip to main content Skip to main navigation menu Skip to site footer
Responsive image
Issue: Vol. 3400 No. 1: 26 Jul. 2012
Type: Articles
Published: 2012-07-26
DOI: 10.11646/zootaxa.3400.1.2
Page range: 20–42
Abstract views: 62
PDF downloaded: 27

Two new species of Atlantocuma (Crustacea: Cumacea), and a new genus and species from Japan, Northwest Pacific, with observations on the degeneration of mouthparts in ovigerous females

Ushimado Marine Laboratory, Okayama University, Ushimado, Okayama 701-4303, Japan
Crustacea Cumacea Atlantocuma Pseudopicrocuma new genus new species deep-sea Northwest Pacific

Abstract

Two species of the cumacean genus Atlantocuma from the southern coast of Honshu, Japan, 781–861 m depth, A. gamoisp. nov. and A. ojii sp. nov., and Pseudopicrocuma japonicum gen et sp. nov. from Nansei Islands, 566–1769 m depth,are described. Atlantocuma gamoi is characterized by (1) carapace elevated in preparatory and ovigerous female, (2)antero-lateral angle of carapace with 3 teeth in females, and (3) pseudorostrum of carapace of adult males truncate,anterolateral angle without teeth. Atlantocuma ojii is characterized by (1) carapace not elevated in preparatory females,but elevated in ovigerous females, (2) inferior margin of carapace in ovigerous female serrated for entire length, (3)pseudorostrum of carapace in adult males truncate, (4) uropod exopod with 1–2 spiniform setae on inner margin, exceptfor subterminal one. The new genus Pseudopicrocuma, which is similar to Picrocuma from shallow waters of easternAustralia, is characterized by (1) well-developed exopods present on maxilliped 3 and pereopods 1–3 in both sexes, (2)antenna 1 of adult males with many aesthetascs-like sensory setae on peduncle articles 2 and 3, (3) male antenna 2 ofclasping form, and (4) uropod slender, peduncle shorter than rami. Pseudopicrocuma shows affinity to Atlantocuma exceptfor (1) arrangement of well-developed exopods on pereopods, (2) male antenna 2 flagellum of clasping form, and (3)uropod peduncle shorter than rami. In addition, P. japonicum and the new Japanese Atlantocuma species are characterizedby a similar trend in degeneration of mouthparts (mandibles – maxillipeds 2) in ovigerous females, suggesting a ratherclose relationship of these genera with quite different arrangements of exopods on pereopods. These 2 genera are currentlyplaced in Nannastacidae. Other possible relatives of Pseudopicrocuma are Spilocuma (Bodotriidae) and Claudicuma (Nannastacidae).

References

  1. Akiyama, T. & Gerken, S. (2012) The cumacean (Crustacea: Peracarida) genus Petalosarsia from the Pacific Ocean. Zootaxa, 3320, 1–35.

    Băcescu, M. (1988) Crustaceorum catalogus 7. In: Gunner HE, Holthuis LB (eds) Cumacea I. SPB Academic Publishing, The Hague, p1–173.

    Băcescu, M. & Muradian, Z. (1974) Campylaspis, Styloptcuma, Atlantocuma, new genera of cumacea from the deep waters of the Atlantic. Revue Roumaine de Biology. 19 (2), 71–79.

    Băcescu, M. & Muradian, Z. (1978) Fontainella mediterranea gen. n., sp. n., Cumacé (Pseudocumatidae) trouvé en Méditerranée orientale. Revue Roumaine de Biologie. Série de Biologie Animale, 23 (1), 3–7.

    Corbera, J. (2002) Amphi-Atlantic distribution of the Mancocumatinae (Cumacea: Bodotriidae), with description of a new genus dwelling in marine lava caves of Tenerife (Canary Islands). Zoological Journal of the Linnean Society, 134, 453–461.

    Corbera, J. (2006) Arthropoda, Crustacea, Cumacean. In: Desbruyeres, D., M. Segonzac & M. Bright (eds.), Handbook of Deep-Sea Hydrothermal Vent Fauna. Denisia, 18, 370.

    Corbera, J., Segonzac, M. & Cunha, M.R. (2008) A new deep-sea genus of Nannastacidae (Crustacea, Cumacea) from the Lucky Strike hydrothermal vent field (Azores Triple Junction, Mid-Atlantic Ridge). Marine Biological Research, 4, 180–192.

    Gamô, S. (1967) Studies on the Cumacea (Crustacea, Malacostraca) of Japan. Part I. Publications of the Seto Marine Biological Laboratory, 15, 133–163.

    Gamô, S. (1987) Cumacean crustaceans obtained by the 26th Japanese Antarctic research expedition (1984–1985), with descriptions of four new species. Proceedings of the NIPR Symposium of Polar Biology, 1, 145–160.

    Gerken, S. & McCarty, A. (2008) Kerguelenica petrescui (Crustacea:Cumacea), a new species from Australian waters. Journal of Crustacean Biology, 28(3), 564–571.

    Hale, H.M. (1936) Cumacea from a South Australian reef. Record of the South Australian Museum, 5, 404–438.

    Hale, H.M. (1945) Australian Cumacea. No. 9. The family Nannastacidae. Record of the South Australian Museum, 8, 145–218.

    Haye, P. (2007) Systematics of the genera of Bodotriidae (Crustacea: Cumacea). Zoological Journal of the Linnean Society, 151, 1–58.

    Jones, N.S. (1984) The Family Nannastacidae (Crustacea, Cumacea) from the deep-Atlantic. Bulletin of British Museum (Natural History) Zoology, 46, 207–289.

    Jones, N.S. & Burbanck, W.D. (1959) Almyracuma proximoculi gen. et sp. nov. (Crustacea, Cumacea) from brackish water of Cape Cod, Massachusetts. Biological Bulletin, 116(1), 115–124.

    Ledoyer, M. (1977) Cumaces (Crustacea) del Iles Kerguelen recueillis par le N. O. "La Japonaise" en 1972 et 1974 et par le M. S. "Marion-Dufresne" en 1974. Conte National Francais des Recherches Antarctiques, 42, 193–213.

    Ledoyer, M. (1988) Cumaces (Crustacea) profonds de la region de L7ile de Mayotte, Canal de Mozambique, Ocean Indien (Campagne Benthedi, 1977). Mésogéé, 48, 131–172.

    Ledoyer, M (1993) Cumacea (Crustacea) de la campagne EPOS 3 du R. V. polarstern en mer de Waddel, Antarctique. Journal of Natural. History, 27, 1041–1096.

    López-González, P. J., Bandera, M.E., Alfonso, M. I. & García-Gómez, J.C. (1996) A rare Mediterranean cumacean, Fontainella mediterranea (Crustacea), at the threshold of the Atlantic Ocean. Cahiers de Biologie Marine, 37, 113–120.

    Mühlenhardt-Siegel, U. (2003) Shallow-water cumacean Crustacea from Australia and Lonbok (Indonesia): families Bodotridae and Leuconidae. Records of the South Australian Museum, 36, 21–57.

    Mühlenhardt-Siegel, U. (2005) New cumacean species (Crustacea: Peracarida) from the deep-sea expedition DIVA-1 with RV "Meteor" to the Angola Basin in July 2000. Families Lampropidae, Bodotriidae. Organisms Diversity & Evoution. 5, 113–130.

    Omholt, E. & Heard R.W. (1979) A new species of Spilocuma (Cumacea: Bodotriidae: Mancocumatinae) from the Gulf of Mexico. Proceedings of the Biological Society of Washington, 92, 184–194.

    Petrescu, I. (1995) Cumaceans (Crustacea: Peracarida) from the South American coasts collected by the R/V "Vema". Travaux du Muséum National d’ Hisoire Naturelle «Grigore Antipa», 35, 49–86.

    Petrescu, I. (1998) Cumaceans (Crustacea: Cumacea) collected by the expedition of “Grigore Antipa” National Museum of Natural History from the coasts of Tanzania (1973–1974). Part I. Family Bodotriidae. Travaux du Muséum National d’ Hisoire Naturelle «Grigore Antipa», 40, 227–310.

    Petrescu, I. & Heard, R.W. (2004) Redescription of Almyracuma proximoculi Jones & Burbanck, 1959 (Crustacea: Cumacea: Nannastacidae) and description of a new species, A. bacescui n. sp. from the Gulf of Mexico. Travaux du Muséum National d’ Hisoire Naturelle «Grigore Antipa», 47, 97–109.

    Roccatagleata, D. (1981) Claudicuma platensis Gen et sp. nov. (Crustacea, Cumacea) de la ribera Argentina del Rio de Plata. Physis (Buenos Aires), Section B, 39, 79–87.

    Tafe, D. J. & Greenwood, J.G. (1996) The Bodotriidae (Crustacea: Cumacea)of Moreton Bay, Queensland. Memoirs of the Queensland Museum, 39, 391–482.

    Watling, L. (1977) Two new genera and a new subfamily of Bodotriidae (Crustacea: Cumacea) from easter North America. Proceedings of the Biological Society of Washington, 89, 593–598.

    Zimmer, C. (1943) Über neue und weniger bekannte Cumaceen. Zoologischer Anzeiger, 141, 148–167.

    Zimmer, C. (1980) Cumaceans of the American Atlantic boreal coast region (Crustacea: Peracarida). Smithonian Contribution to Zoology, 302, 1–29.