Clarkson, B. and Ferreira Jr., N. 2009. Three new species of Hemiosus Sharp (Coleoptera: Hydrophilidae) and new state records of Hemiosus fittkaui Oliva and H. moreirai d’Orchymont from Brazil. Zootaxa. 2139, 1 (Jun. 2009), 61–68. DOI:https://doi.org/10.11646/zootaxa.2139.1.4.