A,B,C,E, courtesy Can. For. Serv., Can. Dep. 
: Environ., Sault Ste. Marie, Ont. 
D, courtesy S. J. Krieg, Emporium, Pa. 
Figure 58.—Spruce budworm, Choristoneura fumiferana: 
A, moth; B, egg masses: left—unhatched; center— 
shows hatched and unhatched as well as hatching, 
with completely hatched mass to the right; right—egg 
mass parasitized by Irichogramma minutum, C, instar 
ll; D, final instar; E, pupae. 
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