Skip to main content Skip to main navigation menu Skip to site footer
Type: Articles
Published: 2009-12-01
Page range: 55–68
Abstract views: 35
PDF downloaded: 2

Two new species of the genus Elasmopus Costa, 1853 (Amphipoda: Gammaridea: Maeridae) from off the Northeast Brazilian Coast

Universidade Federal do Rio de Janeiro, Museu Nacional, Departamento de Invertebrados, Setor de Carcinologia. Quinta da Boa Vista, s/n, São Cristóvão, Rio de Janeiro, RJ, CEP 20940-040, Brazil
Universidade Federal do Rio de Janeiro, Museu Nacional, Departamento de Invertebrados, Setor de Carcinologia. Quinta da Boa Vista, s/n, São Cristóvão, Rio de Janeiro, RJ, CEP 20940-040, Brazil
Crustacea Taxonomy Identification key Elasmopus karamani sp. nov. Elasmopus lejeunei sp. nov. Brazil

Abstract

The genus Elasmopus has a worldwide distribution with most species living in warm waters. This work describes two new species, both from off the northeast Brazilian coast, including its oceanic banks of Fernando de Noronha Chain. The first new species, E. karamani sp. nov., is easily recognized by palm of gnathopod 2 with a medial concave portion, posterior margin of basis of pereopod 5 and 6 concave, epimeron 3 produced in a sharp spine, and the uropod 3 rami 2.4 times the peduncle length. The other one, E. lejeunei sp. nov., is very similar to E. balkomanus Thomas & Barnard, 1989 and E. lemaitrei Ortiz & Lalana, 1994 in having propodus of gnathopod 2 without palmar corner and posterior margin of basis of pereopod 5 concave. However, it differs from those by presenting gnathopod 2 with a weakly developed process near hinge of dactylus with some robust setae, followed by two tubercles. The propodus inner face presents one ridged line, about 1/3 of propodus length, and perpendicular lines of setae, from the proximal portion of the ridged line almost to the dactylus hinge. A key to all species of the genus Elasmopus recorded in the Brazilian coast is given.

References

  1. Alonso De Pina, G.M. (1997) Records of intertidal amphipods from the southwest Atlantic, with the description of a new species of Elasmopus. Journal of Crustacean Biology, 17, 745–757.

    Krapp-Schickel, T. (2008) What has happened with the Maera-clade during the last decades? Bollettino del Museo Civico di Storia Naturale di Verona, Botanica Zoologia, 32, 3–32.

    Lowry, J.K. & Hughes, L.E. (2009) Maeridae, the Elasmopus group. Zootaxa 2260: 643–702. In: Lowry, J.K. & Myers, A.A. (Eds) Benthic Amphipoda (Crustacea: Peracarida) of the Great Barrier Reef, Australia. Zootaxa, 2260, 1–930.

    Senna, A.R. & Serejo, C.S. (2005) Ingolfiella rocaensis sp. nov. (Crustacea: Amphipoda: Ingolfiellidea): first record of ingolfiellidean amphipods in Brazilian waters. Zootaxa, 962, 1–6.

    Senna, A.R. & Serejo, C.S. (2007) Two new species of Quadrimaera (Crustacea: Amphipoda: Melitidae) from Atol das Rocas, Brazil. Zootaxa, 1593, 55–67.

    Senna, A.R. & Serejo, C.S. (2008) Amaryllididae and Lysianassidae (Amphipoda: Lysianassoidea) from off the central coast of Brazil (11° S–22º S), with descriptions of three new species. Zootaxa, 1718, 45–68.

    Serejo, C.S. (1998) The genus Leucothoe (Crustacea: Amphipoda) from the Brazilian Coast. Beaufortia, 48(6), 105–135.

    Serejo, C.S. (2004) Talitridae (Amphipoda: Gammaridea) from the Brazilian coastline. Zootaxa, 646, 1–29.

    Serejo, C.S. & Licínio, M.V.S. (2002) The genus Ampithoe (Crustacea, Amphipoda, Ampithoidae) from the Brazilian coast. Arquivos do Museu Nacional, 60, 41–60.

    Serejo, C.S., Wakabara, Y. & Valério-Berardo, M.T. (2000) Taxonomy and geographic distribution of Ampelisca (Amphipoda: Gammaridea) from the Brazilian coast. Polskie Archiwum Hydrobiologii, 47(3–4), 495–510.

    Souza-Filho, J.F. & Serejo, C.S. (2008) A new species of Curidia (Crustacea: Amphipoda: Ochlesidae) from northeastern Brazil. Scientia Marina, 72(2), 213–220.

    Souza-Filho, J.F., Souza, A.M.T. & Valério-Berardo, M.T. (2009) Description of four new species of the genus Ampelisca (Amphipoda, Ampeliscidae) from northeastern and southeastern coast of Brazil and designation of a neotype for Ampelisca soleata Oliveira, 1954. Journal of Natural History, 43(37–38): 2391–2423.

    Wakabara, Y. & Serejo, C.S. (1998) Malacostraca - Peracarida. Amphipoda. Gammaridea and Caprellidea. In: Young, P.S. (Ed). Catalogue of Crustacea of Brazil. Museu Nacional, Rio de Janeiro, Série Livros n. 6, pp. 561–594.

    Wakabara, Y., Tararam, A.S., Valério-Berardo, M.T. & Duleba, W. (1991) Gammaridean and Caprellidean fauna from Brazil. Hydrobiologia, 223, 69–77.

    Watling, L. (1989) A classification of crustacean setae based on the homology concept. In: Felgenhauer, B.E., Thistle, A.B. & Watling, L. (Eds). Crustacean Issues, v. 6. Functional Morphology of Feeding and Grooming in Crustacea. CRC Press, New York, pp. 15–26.