Miroculis (Atroari)

Domínguez, Eduardo, Grillet, Maria-Eugenia, Nieto, Carolina, Molineri, Carlos & Guerrero, Edmundo, 2014, Ephemeroptera from the Venezuelan Guayanas´s Uplands: Families Leptophlebiidae, Euthyplociidae and Oligoneuriidae, Zootaxa 3827 (3), pp. 301-317 : 307

Miroculis (Atroari) sp.

Material. Venezuela, Edo Bolívar, Pacheco stream, 5º 10’ 29’’N – 61º 29’ 51’’W, 1144 m, 21/III/2006. 1 male nymph. EG, AMO and MEG cols. Specimens were deposited at the MLBV ( Venezuela) and IBN ( Argentina) .

Discussion. Miroculis (Atroari) nebulosus was described from Cerro de La Neblina, by Savage 1987. Later, Peters et al. (2007) when described the female and nymph, transferred this species to the subgenus Miroculis (Miroculis) . As a consequence, the subgenus Miroculis (Atroari) was restricted to three species from Brazil and Colombia. This new record re-establish the Venezuelan distribution of this subgenus. The male nymph studied here is assigned tentatively to this subgenus because it presents: 1) upper portion of eyes with medium sized facets; 2) posterolateral spines developed beyond posterior margin of terga on abdominal segments V–IX. As several species of this genus are described solely from adults, and the nymphs of this subgenus are not very well characterized, we prefer not to name this species until its adult is known.

Distribution. The subgenus is distributed in Brazil, Colombia and Venezuela (new country record).

Ecology. Individuals were collected during the dry season, in a non-shaded medium sized stream (23 m wide), having a bed-rock bottom and acidic waters (pH=5).