Polizei, T. T. S. and Fernandes, A. S. (2020) “The Neotropical genus Portelmis Sanderson, 1953 (Coleoptera: Elmidae): three new species, new records and updated key”, Zootaxa. Auckland, New Zealand, 4810(3), pp. 452–467. doi: 10.11646/zootaxa.4810.3.3.