Insecta - Coleoptera - Hydrophilidae
Parent taxon: Hydrophilidae according to P. Bouchard et al. 2011
See also Cai et al. 2022, Crowson 1981, Lawrence and Newton 1995 and Short and Fikáček 2013
Sister taxa: Acidocerinae, Alegorius, Aposphinctus, Chaetarthriinae, Creniphilites, Cretosperchus, Enochrinae, Escheria, Escheria bella, Escheria ovalis, Georissinae, Hydrocharis, Hydrophilinae, Mesosperchus schultzi, Orphnospercheus, Paraspercheus, Penitus, Philhydrus, Prospercheus, Protochares, Regimbartia, Rygmodinae, Spercheinae, Sphaeridiinae, Sphaeridium melanarium, Sternolophus
Subtaxa: Hydrochus
Ecology:
Distribution:
• Quaternary of the United Kingdom (2 collections), United States (1: Ohio)
• Eocene of United States (1: Wyoming)
Total: 4 collections each including a single occurrence