245 

 Denning: Trichoptero 



Fig. 10:10. Male genitalia of Rhyacophila. a, kernada, lateral 

 view; o„ tenth tergite; a 2 , aedeagus, lateral; b, pellisa, apical 

 segment of clasper; b„ tenth tergite, lateral view; b 2 , tenth 

 tergite, dorsal; b s and b 4 , aedeagus, ventral and lateral views, 

 respectively; c, norcuta, lateral view; c, tenth tergite, dorsal 

 view; d, orefo, lateral view; e, sequoia, lateral view; e, apex, 

 lateral arm of aedeagus; f, phryganea, lateral view; f, aedeagus, 

 lateral; g, neograndis, lateral view; g, apex, lateral arm of 

 aedeagus; h, vaccuo, lateral view (a, Ross, 1950a; b, Ross, 

 1 938c/; d,f, Ross, 1941b; e. Denning, 1950c; g. Denning 1948c; 

 h, Denning, 1948b). 



Fig. 10:11. Male genitalia of Rhyacophila. a, rayneri, lateral; 

 o„ aedeagus, lateral; b, sonoma, lateral; bj, aedeagus, ventral 

 sheath; c, vepu/sa, lateral; c„ aedeagus, lateral; d, vedra, 

 lateral; d 1 , tenth tergite; d 3 , apex of corinate process; d it apex of 

 ventral process of aedeagus; e, voco/a, lateral; ej and e 2 , lateral 

 view of aedeagus; f, verru/a, lateral; f lf ninth and tenth tergites, 

 dorsal view; f 2 , ventral view of aedeagus sheath (a, Ross, 1951b; 

 b-f. Denning, 1948b). 



and Canada. Only five species aire recorded from 

 California, but doubtless several more will be found. 

 Nearly all the species are small, seldom exceeding 

 a quarter of an inch in length, and are generally 



sequoia Denning 19506 



(fig. 10:10e) 

 sonoma Denning 19486 (fig. 10:116) 

 vaccua Milne 1936 (fig. 10:10A) 

 valuma Milne 1936 



This species may be separated from ; 



by the clavate apical brush of the 



aedeagus. 

 vedra Milne 1936 (fig. 10: lid) 

 velora Denning 1954a (fig. 10:12a) 

 vepulsa Milne 1936 (fig. 10:11c) 

 verrula Milne 1936 (fig. 10:11/) 

 vocala Milne 1936 (fig. 10:lle) 



Tulare, Shasta, 



Sierra 



Sonoma, Tulare 



Shasta County 



Placer, Lassen 



>ellisa (fig. 10:106), 



lateral arms of the 



Widespread 



Shasta County 



Santa Clara, Shasta 



Shasta County 



Butte County 



Genus Glossosoma Curtis 1834 



All but two of the twenty-one described species in 

 this genus are found only in the western United States 



Fig. 10:12. Male genitalia, a, Rhyacophila velora, lateral; 

 Of, aedeagus, lateral; b, Glossosoma bruna, lateral; c, G. ore- 

 gonense, lateral (Denning, 1954a). 



