August, 1944 



Ross: Caddis Flies of Illinois 



193 



and pupae, taken April 30 to October 17, 

 and many larvae and cases, taken March 3 

 to May 7, are from Areola, Cary, Cham- 

 paign, Chicago, Grayslake, Leslie, Neoga, 

 Oakwood, Rantoul, Rosecrans (Des Plaines 

 River), Savoy, Seymour, Spring Grove, Ur- 

 bana, Volo, Watson, Waukegan, West Pull- 

 man, Zion. 



Pycnopsyche Banks 



Pycnopsyche Banks (1905^, p. 9). Genotype, 

 by original designation: Limnephilus scabri- 

 pennis Rambur. 



Allegophylax Banks (1916, p. 118). Geno- 

 type, by original designation: Phryganea sub- 

 Jasciata Say. New synonymy. 



Eustenace Banks (1916, p. 118). Genotype, 

 by original designation: Stenop/iylnx limbatus 

 McLachlan. New synonymy. 



The general shape and color of the wings, 

 the heart-shaped subgenital plate of the fe- 

 male and the structure of the male genitalia, 

 especially the aedeagus, indicate that the 

 species grouped under this genus form a 

 very compact and homogenous unit. There 

 is considerable variation in particular points 

 of the venation and to an even greater de- 

 gree in the spur count, but these differences 

 are not substantiated by any indications of 

 phylogenetic importance. 



Many species occur in the eastern states, 

 but to date onlv three have been taken in 



675D 



SUBFASCIATA 



676E 



GUTTIFER 



Figs. 673-678. — Pycnopsyche, male genitalia. A and B, lateral and dorsal aspect respec- 

 tively; C and D, eighth tergite, lateral and dorsal aspect respectively; E, clasper, caudal aspect; 

 F, aedeagus. 



