August, 1944 



Ross: Caddis Flies of Illinois 



23 



Fig. 22. — Rhyacophila lobifera larva, apex 

 of abdomen. 



Fig. 23. — Agapetus illini larva, apex of ab- 

 domen. 



Fig. 24. — Chimarra feria larva, labrum. 



Fig. 25. — Polycentropus interruptus larva, 

 labrum. 



A, front leg; 5, middle leg; C, hind leg. 



front leg; 5, middle leg; C, hind leg. 



Fig. 28. — Leptocerus americanus larva, an- 

 tenna {a). 



Fig. 29. — Lepidostoma liba larva, antenna 

 id). 



Fig. 30. — Limnephilus submonilijer larva, 

 antenna ia). 



Fig. 31. — Ganonema americaniim larva, lab- 

 rum. 



Fig. 32. — Limnephilus submonilijer larva, 

 labrum. 



Fig. 33. — Helicopsyche borealis larva, anal 



Fig. 26. — Molanna uniophila larva, legs. hooks. 



Fig. 34. — Brachycentrus numerosus larva. 



Fig. 27. — Triaenodes tarda larva, legs. A, anal hooks. 



Fig. 35. — Sericostoma sp. larva, anal hooks. 

 (After Ulmer.) 



Fig. 36. — Psilotreta sp. larva, thorax. 



Fig. 37. — Goera sp. larva, thorax. (After 

 Ulmer.) 



Fig. 38. — Beraea sp. larva, hind leg. (After Ulmer.) 



