Fernandes, A.S., Passos, M.I.S. and Hamada, N. 2010. The genus Portelmis Sanderson, 1953 (Coleoptera: Elmidae: Elminae): first report in Brazil, description of two new Amazonian species and species key for males. Zootaxa. 2517, 1 (Jun. 2010), 33–43. DOI:https://doi.org/10.11646/zootaxa.2517.1.4.