2 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 123 



Rhyacophilidae 



Atopsyche hidalgoi, new species 



Figures 1, 2 



This species is closely related to A. tripunctata Banks, from which 

 it differs in possessing a shorter, broader paracercus, and in lacking 

 the forked dorsal process of the aedeagus. 



Adult. Length of forewing 10-1 1 mm. General color brown; wings 

 with long, erect, brown, golden, and black hairs. Male genitalia: 

 Fifth segment with an anterolateral process about one-fourth length 

 of segment. Sixth sternum with an apicomesal process two-thirds 

 length of segment, process of seventh sternum one-third length of 

 segment. Paracercus broad, slightly longer than fihcercus, bearing 

 two teeth dorsally, ventrally with a hirsute ridge, which ends in a 

 blunt tooth anteapically. Filicercus elongate, clavate. Clasper with 

 basal segment having an inner ridge; apical segment with dorsal 

 margin inrolled near apex. Aedeagus elongate with a slender inner 

 rod, with a strong lateral spine at midlength, apex bearing dorsally 

 a laterally directed tooth. 



Holotype, male: Mexico (Mexico), Las Cruces National Park, La 

 Marquesa, 3000 m elevation, July 5-9, 1965, Flint and Ortiz. 



Paratypes: Same data, 4 cf. Mexico (Morelos), Lagunas Zem- 

 poala National Park, July 10-11, 1965, Flint and Ortiz, 1 cT. 



Glossosomatidae 



Culoptila montanensis, new species 



Figures 3, 4 



The species is close to C. amberia Mosely; however, the genitalia 

 possess a complex of sclerites ventrally that Mosely does not show in 

 C. amberia, and the internal spine of the aedeagus is less than half as 

 long as that of C. amberia. 



Adult. Length of forewing 3.5 mm. Color uniformly dark reddish 

 brown; wings with anastamosis bearing a few paler hairs, most no- 

 ticeably at posterior margin. Male genitalia: Sixth sternum with a 

 short broad, subapical process. Tenth tergum with ventral arm well 

 developed, apex produced and pointed, in ventral aspect horseshoe 

 shaped. Ventrally with a pair of processes bearing a few apical hairs, 

 a broad plate above processes curving upward and outward and 

 bearing internally a curving rodlike process whose tip is directed 

 posteroventrally. Aedeagus capsule-like, apex developed dorsally 

 into a hoodlike structure, internally bearing a single heavily scle- 

 rosed spine about one-third length of aedeagus. 



