Nectopsyche multilineata Flint 1983

Nectopsyche multilineata

This very distinctively marked species is unlike any other species known to me from South America. In some aspects its coloration is reminiscent of the North American N. exquisita, but it lacks the black anal spots present in the latter. The large, scooplike, basoventral lobe of the clasper would ally this species to the N. pavida group, yet no other species of this group has a color pattern in any way similar to N. multilineata.

ADULT.—Length of forewing, 8.5 mm, 5.5–6 mm. Color white, with fuscous markings; antennae annulate basally, dark apically; palpi fuscous, head and thorax dorsally with white hairs and scales overlaying an almost fuscous exoskeleton; forewing with snow-white hair with many transverse bands of fuscous hair, apical bands wavy, with 2 large, round, dark spots basally and another over stigma. Eyes of male small; eye in ventral aspect about as wide as interocular distance.

Male Genitalia: Ninth segment with posterior margin strongly produced ventrally, only slightly produced dorsomesally; dorsolateral arm slightly inflated apicad, tip rounded. Tenth tergite elongate, tip angled dorsad. Clasper with basodorsal lobe enlarged apically; clasper with ventral margin not enlarged ventrally, tip with a distinct apicomesal lobe; basoventral lobes fused mesally, scooplike, with a pair of large marginal setae, divided apicomesally for length of lobe. Aedeagus with a large ventral plate and a small internal sclerite.

MATERIAL.—Holotype (male): ARGENTINA, PCIA. ENTRE RÍOS, Río Uruguay, Salto Grande, 16 Nov. 1973, O.S. Flint, Jr., USNM Type 100545.

Paratypes: VENEZUELA, EDO. BOLÍVAR, RÍO Caroní at Paso Caruchi, 9 Feb 1976, C.M. and O.S. Flint, Jr., 1; 5 km E Tumeremo, 12 Feb 1976, C.M. and O.S. Flint, Jr., 2. EDO. COJEDES, Galeras del Pao, 29 Jul 1967, Rosales and Poole, 3 (IZAM).