194 



Illinois Natural History Survey Bulletin 



Vol. 23, Art. 1 



Illinois. Three others, however, have been 

 taken within a few miles of Illinois and 

 are to be expected here in future collecting. 

 The larvae of several species of this genus 

 have been reared, but to date no characters 

 have been found to separate them to species. 



KEY TO SPECIES 



Adults 



1. Front wings irregularly speckled over 

 entire surface with small, dark 

 brown spots antica, p. 196 



Aedeagus long, narrow, dorsal spines 

 thrice length of their base; mesal 

 area of eighth tergite with a de- 

 pression, fig. 675, . subfasciata, p. 194 



Lateral lobes of eighth tergite widely 

 separated, enlarged and covered 

 with dense, black spines, fig. 676. . 

 guttifer, p. 196 



Lateral lobes of eighth tergite small 

 and bare, fig. 677 luculenta, p. 196 



Tenth segment with dorsal portion 

 tapering gradually to apex, without 

 lateral expansions, fig. 680 8 



Tenth segment with lateral, flangelike 



68IA 



INDIANA 



682A 



SUBFASCIATA 



ANTICA 



/'■' 6 83 A 



Figs. 679-683. — Pycnopsyche, female genitalia. A, ventral aspect; B, dorsal aspect; C, 

 bursa copulatrix. 



Front wings at most with dark brown 

 marks near center and along apical 

 margin 



2. Maxillary palpi 3-segmented (males) 

 Maxillary palpi 5-segmented (females) 



3. Apico-mesal angle of clasper project- 



ing dorsad as a long, sharp point, 



fig. 673 4 



Apico-mesal angle of claspers not pro- 

 duced into a long point, fig. 676. ... 6 



4. Eighth tergite with an abrupt, quad- 



rate mesal notch and with an apical 

 brush of short, black spines, fig. 673 



lepida, p. 195 



Eighth tergite not abruptly notched 

 and with triangular patches of 

 spines instead of an apical brush. . . 



5. Aedeagus short, stocky, dorsal spines 



only twice as long as their base; 

 mesal area of eighth tergite not ex- 

 cavated, fig. 674 Indiana, p. 196 



5 



expansions on dorsal portion, fig. 

 681 9 



8. Bursa copulatrix long and triangular; 



ventral margin of tenth segment bi- 

 lobed and extending beyond dorsum, 



fig. 679 luculenta, p. 196 



Bursa copulatrix shorter and ovate; 

 ventral margin of tenth segment 

 slightly emarginate but not extend- 

 ing beyond dorsum, fig. 680 



guttifer, p. 196 



9. Ventral portion of tenth segment nar- 



rowed to a very small, apical open- 

 ing, fig. 681 Indiana, p. 196 



Ventral portion of tenth segment nar- 

 rowed, but with the apical opening 

 wide, fig. 682 subfasciata, p. 194 



Pycnopsyche subfasciata (Say) 

 Phryganea subfasciata Say (1828, pi. 44). 



