CADDIS FLIES, IV — FLINT 



23 



Figures 46-57. — Ochrotrichia cruces, new species: 46, genitalia, lateral; 47, tenth tergum, 

 right side. Melrichia mexicana, new species: 48, genitalia, lateral; 49, genitalia, dorsal; 

 50, genitalia, ventral; 51, aedeagus, lateral. Neotrichia costaricensis, new species: 52, 

 genitalia, lateral; 53, genitalia, ventral; 54, aedeagus, dorsal. Hydroptila veracruzensis, 

 new species: 55, genitalia, lateral; 56, genitalia, ventral; 57, aedeagus, lateral. 



