Acidocerinae

Acidocerinae is a subfamily in the family Hydrophilidae of aquatic beetles, and it contains over 500 species in 23 genera.

Taxonomy

Acidocerinae has been considered a subfamily since Short and Fikáček restructured the classification of the Hydrophilidae in 2013. The entire classification history of the Acidocerinae was revised by Girón and Short in 2021, based on the results of a phylogenetic analysis.
The subfamily currently contains over 500 species in 24 genera, some of which were erected in 2021.

Description

According to Girón and Short:
Additionally,

Distribution and habitat

According to Girón and Short:

Genera

Acidocerus Klug, 1855: 649 Agraphydrus Régimbart, 1903: 33 Aulonochares Girón & Short, 2019: 112 Batochares Hansen, 1991: 292 Chasmogenus Sharp, 1882: 73 Colossochares Girón & Short, 2021: 55 Crephelochares Kuwert, 1890: 38 Crucisternum Girón & Short, 2018: 116 Ephydrolithus Girón & Short, 2019: 122 Globulosis García, 2001: 153 Helobata Bergroth, 1888: 137 Helochares Mulsant, 1844: 132 Helopeltarium d’Orchymont, 1943: 9 Katasophistes Girón & Short, 2018: 132 Nanosaphes Girón & Short, 2018: 143 Novochares Girón & Short, 2021: 87 Peltochares Régimbart, 1907: 49 Primocerus Girón & Short, 2019: 133 Quadriops Hansen, 1999: 131 Radicitus Short & García, 2014: 252 Sindolus Sharp, 1882: 72 Tobochares Short & García, 2007: 2 Troglochares Spangler, 1981: 316