148 



ILLINOIS BIOLOGICAL MONOGRAPHS 



m 



Fig. 16 — Cladiinae. 

 Fig. 17 — Nematinae. 

 Fig. 18 — Nematinae. 

 Fig. 19 — Blennocampinae. 

 Fig. 20 — Blennocampinae. 



EXPLANATION OF PLATE 



LARVAE OF TENTHREDINIDAE 



Cladius pectinicornis. 

 Pkronidea ventralis. 

 Pkronidea ribesi. 

 Monophadnoides rubi. 

 Tomostethus bardus. 



an anus 



msp mesothoracic spiracle 



pig larvapod 



spi abdominal spiracle 



srp suranal process 



tig 1 mesothoracic leg 



tsp metathoracic spiracle 



