Derallus is a genus of water scavenger beetles in the family Hydrophilidae. There are about six described species in Derallus.
Species These six species belong to the genus Derallus: Derallus altus (LeConte, 1855) Derallus ambitus d'Orchymont, 1940 Derallus angustus Sharp, 1882 Derallus intermedius Oliva, 1995 Derallus rudis Sharp, 1882 Derallus terraenovae Oliva, 1983
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