Acostatrichia elvesta Oláh & Flint 2012

Santos, Allan Paulo Moreira, 2020, A review of the Neotropical microcaddisfly genus Acostatrichia Mosely, 1939 with description of a new species from Brazil (Trichoptera: Hydroptilidae: Leucotrichiinae), Zootaxa 4755 (2), pp. 201-230 : 205

Acostatrichia elvesta Oláh & Flint 2012

Fig. 16

Acostatrichia elvesta Oláh & Flint 2012: 146 , figs. 12–15, male; type locality: Brazil, Rondonia State, creek, 8 km South Cacaulandia; type depository: NMNH [not found].

Remarks. This species was described from only one specimen collected in Northern Brazil.Although in the original description, the unique specimen, the holotype, was said to be in the NMNH, it was not found in this collection. Based on the features provided in the original description, this species agrees with the definition of the A. plaumanni Group as I proposed here. The male has a short costal bulla on each forewing, segment VII bears a double ventral process, segment IX bears paired dorsolateral processes, and the inferior appendages are relatively short and not fused mesally. Acostatrichia elvesta and A. araca sp. nov. share the condition of having two ocelli, whereas all other Acostatrichia species have three. The male genitalia of these two species are quite different, especially with segment IX apparently bearing two pairs of dorsolateral processes in A. elvesta and the subgenital plate being divided longitudinally.

Distribution. Brazil ( Fig. 16 ).

Figures

FIGURE 16. Distribution map of the Acostatrichia species in South America, based on material examined here and previously published records. When latitude and longitude were not available, an approximate location was used. Circle, species in the Acostatrichia plaumanni Group; square, species in the Acostatrichia brevipenis Group; triangle, species in the Acostatrichia cerna Group.