456 PROCEEDINGS OF THE NATIONAL MUSEUM vol. ii4 



Atopsyche clarkei, new species 



Figure l,a-d 



That this most interesting species fits best in the batesi group of the 

 subgenus Atopsaura is attested by the articulated dorsal appendage 

 of the aedeagus and the apicomesal projection of the basal clasper 

 segment. However, the odd invaginations of the third and fourth 

 terga of the male are known only in the kingi complex of the subgenus 

 Atopsyche, which group the species further resembles in the shapes of 

 the basal segment of the clasper and of the paracercus. 



Adult. — Length of forewing, cf 7 mm., 9 8 mm. General struc- 

 ture typical of the genus. Color of specimens in alcohol yellowish 

 brown; wing membrane brown with 3 whitish streaks on forewing, 

 (1) from base of cell R4 to base of cell M3, (2) obliquely from fork of 

 K2+3 and R4+5 to m-cu, and (3) inwardly from notch in posterior margin 

 along curve of Cu2. Abdomen with posteroventral processes mesally 

 on segments G and 7, both reaching nearly to posterior margin of seg- 

 ment 8. Third and fourth terga of the male with an anterolateral ovoid 

 invagination, each appearing to bear many short hairs internally. 

 Male genitalia (fig. l,a,b): Paracercus roughly quadrate, with apical 

 angle produced, and bearing a number of short broad setae along dor- 

 sal margin; filicercus short, 2-3 times as long as cercus and bearing a 

 long seta apically; clasper with basal segment rather broad, about 

 3K times as long as broad, with an apicomesal projection that bears 

 numerous short, stout setae mesally; apical segment slender and curv- 

 ing ventromesally; aedeagus (fig. l,c,d) with a ribbonlike, freely articu- 

 lated dorsal appendage, a simple internal rod, and narrow body bearing 

 lateral flanges. 



Holotype cf, allotype 9, paratype cf: Colombia: Cundinamarca, 

 Chic6, 2800 m., Jan. "^24, 1959, J. F. G. Clai'ke (USNM Type 66016). 



Atopsyche neolobosa, new species 



Figure l,e-h 



This species is very closely related to lobosa Ross, which is known 

 from Bolivia, but differs in a number of small characteristics. The 

 apex of the paracercus is not rolled outwardly, nor is the tip of the 

 filicercus strongly clavate. The aedeagus also seems to be shorter 

 and broader, with the dorsal process of a different shape. 



Adult. — Length of forewing, cf 7-9 mm., 9 11-12 mm. Coloration 

 and whig maculation of specimens in alcohol much as in clarkei. 

 Abdomen mth ventral posteromesal projections from segments 6 and 

 7, that of 6 barely reaching posterior margin of segment 7, that of 7 

 only one-half as long as segment 8; male with a short lateral filament 

 on segment 5, 2-3 times as long as wide. Male genitalia (fig. l,ej): 

 Paracercus slender, with a high, slightly recm'ved point at midlength, 



