found: Work cat.: Brown, H.P. A catalog of the Coleoptera of American north of Mexico. Family Psephenidae, 1983:p. 1 (water penny beetles; psephenids)
found: ITIS, via WWW, Jan. 25, 2001(Psephenidae. Common name: water-penny beetles. Superfamily Dryopoidea, Suborder Polyphaga, Order Coleoptera)
found: World list of insect families, via WWW, Jan. 25, 2001(Psephenidae: Status=valid. Insecta:Coleoptera. Synonym: Eubriidae)
found: Nomina insecta Nearctica, via WWW, Jan. 25, 2001(Psephenidae. Coleoptera)
found: Families of Coleoptera, via WWW, Jan. 25, 2001(Psephenidae. Superfamily Dryopoidea, Series Elateriformia, Suborder Polyphaga)
