A synopsis of the South American Hydrovatus (Coleoptera: Dytiscidae: Hydroporinae), with notes on habitat and distribution, and a key to species

TRÉMOUILLES, E. R.; MICHAT, M. C.; TORRES, P. L. M.

REVISTA DE LA SOCIEDAD ENTOMOLóGICA ARGENTINA

Imprenta Central de la Universidad Nacional de Tucumán

Lugar: San Miguel de Tucumán, Argentina; Año: 2005 vol. 64 p. 61 - 69

0373-5680

We revised the South American members of the genus Hydrovatus Motschulsky. Each of the three recognized species is diagnosed, with emphasis on diagnostic characters. A key summarizing the main differences is provided. To identify South American specimens of H. caraibus Sharp, they were compared with Central American specimens, including type material. Based on the material examined, H. caraibus is a species broadly distributed in Central and South America, with representatives of different areas separated by minor differences. The geographical distributions of the three species are considerably enlarged: H. crassulus Sharp and H. turbinatus Zimmermann are recorded for the first time from Paraguay, and H. caraibus is recorded for the first time from Argentina and Nicaragua. Bionomical information of the species is presented.