INSECT ENEMIES OP WESTERN FORESTS 



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Figure 52. — Pine sawflies: A, Eggs on pine needles, X 2; B, larvae, adults, 

 and cocoons of a pine sawfly, natural size; C, grubs and pupa, X 3.5; D, 

 cocoons, X 1.5; E, adult of the lodgepole sawfly (Neodiprion burkei) , x 5. 



