Reichardt, H. and Hinton, H.E. 1976. On the new world beetles of the family Hydroscaphidae. Papéis Avulsos de Zoologia. 30, 1-20 (1976-1977) (Aug. 1976), 1–24. DOI:https://doi.org/10.11606/0031-1049.1976.30.p1-24.