A synopsis of the Hydrometra (Hemiptera, Heteroptera, Hydrometridae) from the Amazon River floodplain, Brazil, with redescription of Hydrometra argentina Berg

Revista Brasileira de Entomologia

Felipe Ferraz Figueiredo Moreira²  José Ricardo Inacio Ribeiro¹  Jorge Luiz Nessimian² 

[1] ,Universidade Federal do Rio de Janeiro Instituto de Biologia Laboratório de Entomologia Departamento de ZoologiaRio de Janeiro RJ ,Brasil

关键词: Amazon;    aquatic insects;    Gerromorpha;    Neotropics;    taxonomy;    Amazônia;    Gerromorpha;    insetos aquáticos;    Região Neotropical;    taxonomia;   

DOI  :  10.1590/S0085-56262009000100017

来源: SciELO

【 摘 要 】

Hydrometra argentina Berg, 1879, H. caraiba Guérin-Méneville, 1857 and H. guianana Hungerford & Evans, 1934 are newly recorded in the Amazon River floodplain, Brazil. A redescription of H. argentina is also given, as the original description is incomplete. A key to the three known species occurring in this region is provided. Hydrometra argentina can be distinguished from H. caraiba and H. guianana by the body length smaller than 12.50 mm, anteoculus/postoculus ratio between 1.80 and 2.00, clypeus narrow and conical, metacetabulum with no circular pits, and projections on male abdominal sternite VI in the shape of simple spines. The other species can be distinguished mainly by the anteoculus/postoculus ratio and position of projections on male abdominal sternite VI.

【 授权许可】

CC BY-NC-ND   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License