Triplonychus crassifemoris Rosa, 2011: 8

Holotype: 1 ♂. Igarapé Gurupi–Una, Aldeia Araçu, MA, 50 Km E de Canindé, II.1966, Malkin col.; [on red] Holótipo; [on red] Triplonychus crassifemoris Rosa, 2011, Holótipo.

Conservation status: Good condition; specimen glued on white card. Paratypes: 5 ♂. Idem.

Conservation status: Good condition. 3 specimens glued on triangles by elytra; one glued on card; one with genitalia dissected in a tube under specimen.