New and additional records of Metharpinia and Microphoxus (Crustacea: Amphipoda: Phoxocephalidae) from Brazilian waters

Abstract New records of the species Metharpinia dentiurosomaAlonso de Pina, 2003, M. grandiramaAlonso de Pina, 2003, M. iadoAlonso de Pina, 2003, Microphoxus cornutus (Schellenberg, 1931) and Mi. uroserratusBustamante, 2002 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.