260 



Denning: Trichoptera 



Fig. 10:29. Male and female genitalia, a, Lenorchus gravidus, lateral; a„ tenth tergite, dorsal; 

 b, Lenorchus rillus, lateral; b u tenth tergite, dorsal; c, Psychoglypha avigo, lateral; d, Neophylax 

 occidentis, lateral; e, Glyphopsyche irroraia, lateral; f, Psychoglypha orm/'ae, lateral; g, Psycho- 

 glypha bella, lateral; h, Oligophlebodes sierra, lateral; h lf ventral view; ;', Neophylax rickeri, 

 lateral; i M tenth tergite, dorsal; ;', Ecclisomyia bilera, lateral; /„ female genitalia, lateral; k, 

 Ecclisomyia conspersa, lateral; fc lf clasper, ventral; /, Ecclisomyia simulata, lateral; /„ aede- 

 agos; l 2 , clasper, ventral (a,b, Schmid, 1952a, c,e-g, Schmid, 1952b; d, Ross, 1938; h, Ross, 

 1944; i. Denning, 1948c; ;, Denning, 1951; k,l, Ross, 1950b). 



Key to Adult Males 



Small specimens, approximately 10-12 mm. in length. 

 (No California records are available but it occurs in 



Oregon.) minutus Ling 1938 



Larger specimens, 20 mm. or more in length 2 



Apex of 10th tergite acute, appearing pointed from 

 both lateral and caudal view; apicoventral corner of 



cerci produced into a long, narrow finger (fig. 10:27c); 



Mono and San Bernardino counties, .magnus Banks 1918 



— Apex of 10th tergite rounded from either lateral or 



caudal view, apicoventral corner of cerci not produced 



into a narrow finger 3 



3. Apicoventral corner of cerci produced into a thick, 

 short rounded process (fig. 10:27a); Lassen to San 

 Bernardino County incisus Banks 1943 



