Hydroptila bidens Flint 1983

Hydroptila bidens

This species is related to H. producta Mosely described from Santa Catarina, Brazil. With this species, it shares the lack of a posterolateral spur from the ninth segment and general form of the genitalia. From H. producta, H. bidens differs most noticeably in possessing two dark points apically on the clasper.

ADULT.—Length of forewing, 2.5 mm. Color in alcohol, pale brown. Seventh sternum with a pointed apicomesal process in both male and female.

Male Genitalia: Ninth segment produced and rounded anteroventrally; without posterolateral spur. Tenth tergum with a shallow dorsomesal excision; rather broad in lateral aspect with an indistinct lateral sclerotization. Subgenital plate rounded, with a pair of apicomesal setae. Clasper enlarged apicad, with a pair of apical dark points. Aedeagus with apical section as long as basal tube; a spiral process borne from neck; apical tube narrow, tapering to an slender point, with central tubule distinct and mostly free of tube.

Female Genitalia: Eighth segment unmarked ventrally, short; posterior margin ventrally convex, dorsally concave, with a few small setae ventrally.

MATERIAL.—Holotype (male): ARGENTINA, PCIA. JUJUY, Aguas Calientes, 18–19 Oct 1968, L.E. Peña G., USNM Type 100512.

Paratypes: PCIA. TUCUMÁN, S Concepción, 19 Feb 1970, L.E. Peña G., 1, 4.