PLATE 91 



Neodiprion lecontei: Sixth-stage larva. 



A. — External view of the thorax. 



B. — External view of the second and third abdominal segments. 

 C. — External view of the ninth and tenth abdominal segments. 

 D. — Internal view of thoracic skin. 



E. — Internal view of the skin of the second and third abdominal segments. 

 F. — Diagrammatic cross section of the abdomen showing the longitudinal areas 

 of the body on its transverse circumference. 



EXPLANATION OF SYMBOLS 



Hypop, hypopleurite. 



NP, neck plate. 



Prep, preepipleurite. 



Prhyp, prehypopleurite. 



PSA, postspiracular area. 



Psep, postepipleurite. 



Pshyp, posthypopleurite. 



SA , spiracular area. 



Sp, spiracle. 



I a , middorsal; I, dorsal; II, subdorsal; III, laterodorsal ; IV, supraspiracular; V, 

 spiracular; VI, epipleural; VII, pleural; VIII, hypopleural or latero ventral ; IX, 

 ad ventral; X, ventral; and X a , mid ventral. 



