Murvosh, C. M. (1971) Ecology of the water penny beetle Psephenus herricki (DeKay). Ecological Monographs, 41(1): 79-96.／詳しい生態の報告。図が多いのがよろしい。
Murvosh, C. M. and B. W. Miller (1974) Life history of the western water penny beetle, Psephenus falli (Coleoptera: Psephenidae). The Coleopterists Bulletin, 28(2): 85-92.／図がほとんどない。
