Clarkson, Bruno, and Nelson Ferreira-Jr. 2014. “Four New Species and First Nominal Record of Chasmogenus Sharp, 1882 (Coleoptera: Hydrophilidae) from Brazil”. Zootaxa 3765 (5). Auckland, New Zealand:481–494. https://doi.org/10.11646/zootaxa.3765.5.6.