256 



Denning: Trichoptera 



Fig. 10:26. Distinguishing structures of adult Trichoptera. 

 a, Apatania stigmafella, front wing; b, Psychoglypha ovi'go, front 

 wing; C, Limnephilus submonilifer, head and thorax; d, Apatania 

 sorex, male genitalia, lateral; a 1 ,, male genitalia, ventral; e, 

 Chyranda centralis, male genitalia, lateral; e,, aedeagus; f, 

 Pycnapsyche subfasciata, head and thorax; g, Pedomoecus sierra, 

 male genitalia, lateral; g,, aedeagus; ft, C/osfoeca disjunctus. 



The male genitalia are distinctive for each of the 

 species. 



acoma Denning 1947 (fig. 10:25/) 

 argosa Ross 1938 (fig. 10:25*) 

 rono Ross 1941 (fig. 10:25i) 

 xera Ross 1938 (fig. 10:25;') 



Santa Clara County 



Siskiyou County 



Humboldt to Tuolumne 



Mono to Shasta 



Family PHRYGANEIDAE 



Caddis flies belonging to this family are generally 

 large, seldom less than 12-14 mm. in length. Seven 

 genera containing twenty-nine species are known 

 from the United States and Canada. The larvae are 

 generally found among submerged plants in lakes 

 and marshes, but a few species are found in slowly 

 flowing streams. The larval cases (fig. 10:2a) are 

 generally long and built in a spiral. The family is 

 very poorly represented in California, there being 

 only three genera and three species recorded to date. 



Key to the Genera 1 

 Adult males 





1. Ninth sternite produced caudad as a shelf beyond the 

 base of the claspers Ptilostomis Kolenati 1859 



— Ninth sternite not shelflike 2 



2. Clasper short, biscuit-shaped, produced caudad into 

 a short, slightly upturned point 



Phryganea Linneaus 1758 



— Claspers produced dorsad .into a prominent process 



3 



3. Tenth tergite consisting of 2 long, black sclerotized 

 rods Eubasilissa Martynov 1930 



— Tenth tergite not rodlike 4 



4. Hind wings mostly black except for yellow reticulations 

 near apex Oligostomis Kolenati 1848 



— Hind wings with only black spots on a gray or clear 

 ground color 5 



5. Ninth tergite forming a transverse, somewhat hood- 

 shaped area, and bearing a brush or pair of brushes 

 of long setae Agrypnia Curtis 1835 



— Ninth tergite continuous with outline of 10th tergite, 

 usually not bearing long setae 6 



6. Middle tibiae thorny, the black spines very prominent; 

 wings shiny with black markings 



Banksiola Martynov 1924 



— Middle tibiae not thorny, the black spines not prom- 

 inent, wings dull, tawny brown Fabria Milne 1934 



1. Frons with a median black line 2 



— Frons without a median black line 3 



2. Pronotum with anterior margin black, and without a 

 diagonal black line Phryganea Linneaus 1758 



— Pronotum with a diagonal black line, anterior margin 

 mostly yellow Banksiola Martynov 1924 



"Adapted from Ross (1944). 

 "After Ross (1944). 



male genitalia, lateral; fi t , aedeagus; i, Dicosmoecus atripes, 

 male genitalia, lateral; /',, aedeagus, /', Dicosmoecus unicolor, 

 male genitalia, lateral; /'„ aedeagus; k, Agrypnia glacial i s, male 

 gentalia, lateral; k„ dorsal view (o-c,f, Ross, 1944; d,g, Ross, 

 1941; e,h-j, Ross, 1938; k. Celeste Green, 1955). 



