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New and additional records of MetharpiniaSchellenberg, 1931Schellenberg, A. 1931. Gammariden und Caprelliden des Magellangebietes, Südgeorgiens und der Westantarktis. Further Zoological Results. Swedish Antarctic Expedition 1901-1903, 2(6): 1-290. and MicrophoxusBarnard, 1960Barnard, J.L. 1960. The amphipod family Phoxocephalidae in the Eastern Pacific Ocean, with analyses of other species and notes for a revision of the family. Allan Hancock Pacific Expedition, 18: 175-368. (Crustacea: Amphipoda: Phoxocephalidae) from Brazilian waters

Abstract

New records of the species Metharpinia dentiurosomaAlonso de Pina, 2003Alonso de Pina, G.M. 2003a. A new species of Phoxocephalidae and some other records of sand-burrowing Amphipoda (Crustacea) from Argentina. Journal of Natural History, 37(9): 1029-2057., M. grandiramaAlonso de Pina, 2003Alonso de Pina, G.M. 2003a. A new species of Phoxocephalidae and some other records of sand-burrowing Amphipoda (Crustacea) from Argentina. Journal of Natural History, 37(9): 1029-2057., M. iadoAlonso de Pina, 2003Alonso de Pina, G.M. 2003a. A new species of Phoxocephalidae and some other records of sand-burrowing Amphipoda (Crustacea) from Argentina. Journal of Natural History, 37(9): 1029-2057., Microphoxus cornutus (Schellenberg, 1931Schellenberg, A. 1931. Gammariden und Caprelliden des Magellangebietes, Südgeorgiens und der Westantarktis. Further Zoological Results. Swedish Antarctic Expedition 1901-1903, 2(6): 1-290.) and Mi. uroserratusBustamante, 2002Bustamante, A. 2002. Three new species of Microphoxus Barnard, 1960 (Amphipoda, Phoxocephalidae, Metharpiniinae) from the coast of Rio de Janeiro, Brazil. Arquivos do Museu Nacional, 60(2): 55-78. are reported for Brazilian waters. A discussion about the Metharpinia-Microphoxus complex is presented based on literature review and new observations of sampled species. Emended diagnoses are presented for the recorded species of Metharpinia and identification keys to world species of Metharpinia and Microphoxus are provided.

Key-Words.
Southwestern Atlantic; Species complex; Argentina; Brazil; Chile

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