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Hydrophilidae, also called water scavenger beetles, is a family of chiefly aquatic beetles. Aquatic hydrophilids are notable for their long maxillary palpi, which are longer than their antennae. Several of the former subfamilies of Hydrophilidae have recently been removed and elevated to family rank; Epimetopidae, Georissidae (= Georyssinae), Helophoridae, Hydrochidae, and Spercheidae (= Sphaeridiinae). Some of these formerly-included groups are primarily terrestrial or semi-aquatic.
The vernacular name water scavenger beetles is not an accurate description of their habit. With rare exceptions, the larvae are predatory while the adults may be vegetarians or predators in addition to scavenging. Many species are able to produce sounds.
There are 2,835 species in 169 genera (Short & Fikáček, 2011: 85, table 1).
- Short, A. E. Z. Fikáček, M. 2011: World catalogue of the Hydrophiloidea (Coleoptera): additions and corrections II (2006–2010). Acta Entomologica Musei Nationalis Pragae, 51(1): 83-122. abstract PDF
- Media related to Hydrophilidae at Wikimedia Commons
- Data related to Hydrophilidae at Wikispecies
- John L. Foltz (June 8, 2001). "Family Identification – Hydrophilidae". University of Florida.
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