N0 - 3«os CADDIS FLIES, IV — FLINT 3 



Holotype, male: Guatemala (El Progreso), Finca La Cajeta, 

 Aug. 12-20, 1965, Flint and Ortiz. 



Protoptila loterospina, new species 



Figure 5 



Since this species bears a lateral spine from the aedeagus, it is 

 placed in group 1. It is probably closest to P. alexanderi Ross, from 

 which it differs in the longer, more deeply divided eighth sternum, 

 very long, slender spine from the aedeagus, and the lateral spine from 

 the tenth tergite. 



Adult. Length of forewing 4 mm. Uniformly brown, faintly paler 

 along anastamosis. Male genitalia: Sixth sternum with a pointed 

 apicomesal process. Eighth tergum with posterior margin bearing a 

 dense brush of setae; sternum produced into two long terete processes. 

 Ninth segment rounded anteriorly, sternum barely produced pos- 

 teriorly. Tenth tergite heavily sclerotized, dorsal margin with a 

 shallow rectangular emargination, dorsoapical angle slightly produced, 

 bearing a strong lateral spine. Aedeagus with a pair of basoventral 

 processes, mesoventrally with two pairs of interlocking processes; 

 paired long slender spines arising laterally, which extend posteriad 

 beneath ventral margin of tenth tergite; apex bearing a heavily scle- 

 rotized ventral scooplike process and a dorsomesal spine. 



Holotype, male: Costa Rica, La Lola, Apr. 28, 1957, R. D. Shenefelt. 



Protoptila rnarqua, new species 



Figure 6 



This species is a typical member of Mosely's group 1. It is perhaps 

 most closely related to P. piacha Mosely, from which it differs in 

 the very long bifid process of the eighth sternum, dorsal knobs and 

 apical spine of the aedeagus, and the sharply twisted apex of the 

 lateral spine. 



Adult. Length of forewing 4 mm. Color fuscous, legs with annulae 

 of pale hairs at apices of segments; wings with a band of whitish 

 hairs at anastamosis, a small spot of white nearer base, and a diffuse 

 band of brownish hairs subapically. Male genitalia: Sixth sternum 

 with an elongate apicomesal process. Eighth segment barely pro- 

 duced dorsally; sternum developed into a pair of very long terete 

 processes, the mesal division extending almost to base. Ninth 

 segment developed into a long ventromesal process, rounded anteri- 

 orly. Tenth tergite decurved, uniformly widened apically, in lateral 

 view with an apical tooth that extends as a shelf along the inner 

 ventral margin. Aedeagus with a lateral spine whose tip is sharply 



