262 



Denning: Trichoptera 



Fig. 10:30. Male genitalia, a, Drusinus edwardsi, aedeagus, ventral; o„ lateral view; a 2 , dorsal 

 view; b, Marilia flexuosa, lateral; c, Namamyia plutonis, lateral; c l# dorsal view; d, Nerophilus 

 californicus, lateral; d u clospers, ventral view (Celeste Green, 1955). 



10:29A) (Shasta and Tuolumne counties), is known to 

 occur in California. 



Genus N eophylax McLachlan 1871 



Seventeen Nearctic species are known to occur in the 

 genus, but only two have been collected in California. 

 The larvae are found in rapidly flowing streams, and 

 their cases are made of sand with ballast stones at 

 the sides (fig. 10:2;'). The adults are commonly taken 

 in cool places under damp bridges or in the foliage 

 along the sides of streams. At high altitudes the 



adults emerge late in the fall. The fairly short, trian- 

 gular wings are characteristic of the genus. 



occidentis Banks 1924 (fig. 10:29d) 

 rickeri Milne 1935 (fig. 10:29t) 



Sierra, Modoc, 



Placer, Tuolumne 



Marin, Contra Costa 



Genus Ecclisomyia Banks 1907 



The genus contains seven species, five of which have 

 been described from western United States and Can- 

 ada. Three species are known to occur in California. 



