Water scavenger beetle

Hydrophilidae, also known colloquially as water scavenger beetles, is a family of beetles. Aquatic hydrophilids are notable for their long maxillary palps, which are longer than their antennae. Several of the former subfamilies of Hydrophilidae have recently been removed and elevated to family rank; Epimetopidae, Georissidae (= Georyssidae), Helophoridae, Hydrochidae, and Spercheidae.

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Tropisternus es un género de coleópteros acuáticos de la familia Hydrophilidae. El género tiene 63 especies en 5 subgéneros en América del Norte y América del Sur. ​​​​​ Especies Subgénero Homostethus Tropisternus cordieri Orchymont, 1922 Subgénero Pleurhomus Tropisternus sahlbergi Sharp, 1883 Subgénero Pristoternus Tropisternus apicipalpis (Chevrolat, 1834) Tropisternus chalybeus Laporte, 1840 Tropisternus crassus Sharp, 1882 Tropisternus laevis (Sturm, 1826) Tropisternus latus (Brullé, 1837) Tropisternus mergus Say, 1835 Tropisternus missionum Fernández & Bachmann, 2000 Tropisternus…