T. T. S.  Polizei and Hamada, N., ?A new minute riffle beetle (Coleoptera: Elmidae: Pagelmis) from the Brazilian Amazon?, Zootaxa, vol. 5061, no. 2, pp. 369?376, 2021.

A. S.  Fernandes, Polizei, T. T. S., and Boldrini, R., ?Notes on Stenhelmoides and description of the true male genitalia of S. strictifrons Grouvelle, 1908 (Coleoptera: Elmidae)?, Acta Amazonica, vol. 50, pp. 317-326, 2020.

T. T. S.  Polizei and Fernandes, A. S., ?The Neotropical genus Portelmis Sanderson, 1953 (Coleoptera: Elmidae): three new species, new records and updated key?, Zootaxa, vol. 4810, no. 3, pp. 452?467, 2020.