Nectopsyche brunneofascia Flint 1983

Nectopsyche brunneofascia

Considering both color and structure, this species is clearly a member of the N. bruchi group. There are not any clear differences in the male genitalia between N. bruchi (Navás) and N. brunneofascia; however, the coloration appears to be distinctly different. The distinct dark spots on the veins, both basally and apically, in N. bruchi are totally lacking in this species, and instead the wing is marked by a series of transverse brown bands separated only by flecks of white hair on the veins.

ADULT.—Length of forewing, 9–11 mm, 7–8 mm. Color brown, banded; antennae strongly annulate basally, unicolorous apically; body and appendages pale brown, head more golden, head and thorax dorsally with white hair; forewing brown, veins with large flecks of white hair arranged in transverse rows, thus breaking the brown into broad bands. Eyes of male small; eye in ventral aspect about as wide as interocular distance.

Male Genitalia: Ninth segment erect, posterolateral margin slightly oblique, barely produced dorsomesally; dorsolateral arms long, enlarged apically. Tenth tergites elongate, tips surpassing apices of claspers. Clasper with basodorsal lobe long, apex much enlarged and produced laterad; clasper with ventral margin distinctly, but not greatly, enlarged basally, with a distinct apicomesal lobe; basoventral lobe in ventral aspect about as broad basally as long, multisetate. Aedeagus with a large ventral plate and a small C-shaped internal sclerite.

MATERIAL.—Holotype (male): ARGENTINA, PCIA. MISIONES, Puerto Libertad, 24 Nov 1973, O.S. Flint, Jr., USNM Type 100543.

Paratypes: Same data as holotype, 5, 3; Arroyo Saura, 9 km N L.N. Alem, 20 Nov 1973, O.S. Flint, Jr., 1; Arroyo Coatí, 15 km E San José, 18–19 Nov 1973, O.S. Flint, Jr., 2.