244 



Denning: Trichoptera 



Fig. 10:8. Male genitalia of Rhyacophi'/a. a, rotunda, lateral view; o,, tenth tergite, dorsal 

 view; b, basalis, lateral; c, nevadensis, lateral; c„ tenth tergite, dorsal; d, betteni, lateral; 



d lf tenth tergite, dorsal (Celeste Green, 1955). 



Fig. 10:9. Male genitalia of Rhyacophila. 

 view; b, ecosa, lateral 

 agus, ventral and lateral views, respectively; c, karila, lateral, 

 d, harmstoni, lateral; d lt tenth tergite, dorsal view; d 2 and d s , 

 aedeagus, lateral and ventral views, respectively (a,c, Denning, 

 1948b; b, Ross, 1941; d, Ross, 1944). 



the Nearctic region. Of these, twenty-nine are known 

 from California. The California species may be dis- 

 tinguished by the accompanying figures of male 

 genitalia. 



acropedes Banks 1914 (fig. 10:7a) 

 angelita Banks 1911 (fig. 10:7c) 

 basalis Banks 1911 (fig. 10:86) 

 betteni Ling 1938 (fig. 10:8d) 

 bifila Banks 1914 (fig. 10:9a) 

 chandleri Denning 1955 (fig. 10:36a) 

 ecosa Ross 19416 (fig. 10:96) 

 grandis Banks 1911 (fig. 10:76) 

 harmstoni Ross 1944 (fig. 10:9a 7 ) 

 karila Denning 19486 (fig. 10:9c) 

 kernada Ross 1950a (fig. 10:10a) 

 lineata Denning 1955 (fig. 10:366) 

 neograndis Denning 19486 



(fig. 10:10a) 

 nevadensis Banks 1924 



(fig. 10:8c) 

 norcuta Ross 1938^ (fig. 10:10c) 

 oreta Ross 19416 (fig. 10:10a") 

 pellisa Ross 1938a" 



(fig. 10:106) 

 phryganea Ross 19416 (fig. 10:10/) 

 rayneri Ross 19516 (fig. 10:11a) 



Shasta County 



Widespread 



Los Angeles County 



Marin to Shasta 



Sierra, Merced, Inyo 



Siskiyou County 



Shasta County 



Shasta, Nevada, Marin 



Lassen County 



Humboldt County 



Tulare County 



Shasta County 



Alameda, Sonoma, Fresno 



Lassen, Shasta, Butte 



Santa Cruz County 



Shasta, San Bernardino 



Sierra, Lassen, Mono, 



Inyo, San Bernardino 



Shasta County 



Riverside, Los Angeles 



Shasta to Los Angeles 



rotunda Banks 1924 (fig. 10:8a) 



This species is similar to norcuta (fig. 10:10c), differing 

 in that the mesal part of the 10th tergite is not prolonged 

 into a prominent lobe. 



