174 



Illinois Natural History Survey Bulletin 



Vol. 23, Art. 1 



near its middle a short fork which is nar- 

 row and small. 



The male of this species was described by 

 Betten & Mosely (1940, p. 108) as the 

 male of their new species simulans (the 

 female type of simulans is ocellifera). 



In Illinois we have only three scattered 

 collections for this species, all of them along 

 fairly large rivers, including the Kankakee, 

 Rock and Kaskaskia. Our few records ex- 

 tend from May until late September. 



The range of the species is poorly known 

 but apparently is extensive through much 

 of the Northeast; records include Georgia, 

 Illinois, Michigan, New Jersey and New 

 York. 



Illinois Records. — Momence: June 4, 

 1932, Prison & Mohr, 1 $ . New Memphis, 

 Kaskaskia River: Sept. 25, 1939, Prison & 

 Ross, 25. Olive Branch: Oct. 4, 1909, 

 W. J. Gerhard, 1$, fm. Oregon: May, 

 1929, Sauer, 1$. 



Ptilostomis angustipennis (Hagen) 



Neuronia angustipennis Hagen (1873, p. 400); 

 &, 9. 



This species has not yet been taken in the 

 state but may be found with subsequent col- 

 lecting. We have records from Massachu- 

 setts, Michigan and New Jersey. 



Phryganea Linnaeus 



Phryganea Linnaeus (1758, p. 547). Geno- 

 type, by subsequent designation of Westwood 

 (1840, p. 49): Phryganea grandis Linnaeus. 



The adults of this genus are all large, 

 with a conspicuous pattern of brown and 

 gray, most noticeable in repose, fig. 602. 

 The female ninth sternite, fig. 605, and the 

 short, biscuit-shaped claspers of the male, 

 fig. 603, are diagnostic for the genus. 



Only three species are recognized in 

 North America, and two of these have been 

 taken in Illinois. Larvae of these two spe- 

 cies have been reared, but no characters 

 have yet been found to distinguish them. 



KEY TO SPECIES 



1. Hind wings with basal two-thirds 

 smoky, apical third dark brown or 



blackish gray sayi, p. 176 



Hind wings uniformly gray or brown- 

 ish, marked at apex only with a few 

 slightly darker darts along the veins, 



Fig. 602. — Phryganea cinerea cT. This 

 species may attain a length of nearly an inch. 

 Its mottled pattern mimics the dead rushes on 

 which it rests. 



