Macrostemum triste (Navás 1916), Navas, 1916

França, Diogo, Paprocki, Henrique & Calor, Adolfo R., 2013, The genus Macrostemum Kolenati 1859 (Trichoptera: Hydropsychidae) in the Neotropical Region: Description of two new species, taxonomic notes, distributional records and key to males, Zootaxa 3716 (3), pp. 301-335 : 329

Macrostemum triste (Navás 1916) nomen dubium

Macronema triste Navás 1916: 29 , 30 [type locality: Brazil, Nueva Friburgo; type depository unknown (“collection Navás, now lost?”, Flint et al. 1999); ♀].

Macrostemum triste (Navás 1916) ; Flint et al. 1999: 69 [taxonomic notes; distribution]; Paprocki et al. 2004: 8 [distribution]; Dumas et al. 2009: 359 [distribution].

The holotype of this species was not available for study and specimens were not examined. The information for this species is from Navás (1916).

Synopsis. Adult. Head testaceous. Compound eyes brown. Scapes black. Maxillary palps with first three articles testaceous and rest black. Prothorax black. Meso- and metathorax black. Legs testaceous. Tibial spur formula 1,4,4. Forewings dark-ferruginous; discoidal cell present; radial sector markedly expanded.

Material examined. None.

Remarks. The diagnosis provided in the original description is not sufficient to distinguish this species from those presently known in Macrostemum .

Distribution. Brazil (RJ).