144 



ILLINOIS BIOLOGICAL MONOGRAPHS 



[462 



EXPLANATION OF PLATE 

 LARVAE OF XYELIDAE AND TENTHREDINIDAE 



Fig. 6 — Xyelidae. 

 Fig. 7 — Tenthredinidae. 

 Fig. 8— Tenthredinidae. 

 Fig. 9 — Tenthredinidae. 

 Fig. 10 — Tenthredinidae. 



Megaxyela major. 



Diprioninae. Neodipriron lecontei. 

 Emphytus apertus. 

 Strongylogaster anmtlosus. 

 Dolerus similis. 

 anus 



mesothoracic spiracle 

 larvapod 



abdominal spiracle 

 mesothoracic leg 

 metathoracic spiracle 



Emphytinae. 

 Selandriinae. 

 Dolerinae. 



msp 



Pig 

 spi 

 tig 1 

 tsp 



