514 INSECT PESTS OF FARM, GARDEN AND ORCHARD 



and partially drying conditions mentioned. The insect has but 

 one brood yearly. The beetles mature for the most part in the 

 fall, and generally remain in their larval burrows until the follow- 

 ing spring. A few may leave the burrows in the fall and con- 



FIG. 371. The grape cane-borer (Amphicerus bicaudatus Say): a, beetle, 

 back and side views; b, pupa; c, larva, with feet enlarged; d, burrow in 

 apple .twig made by adult; e, larval gallery in tamarisk, with pupa in 

 cell at end; /, injury to young shoot and cane showing entrance of beetle 

 near /, and the characteristic wilting and new growth all much enlarged 

 except d, e, f. (After Marlatt, U. S. Dept. Agr.) 



struct others in the twigs of apple or other plants in which to 

 hibernate. In the spring, however, they begin their destructive 

 work early, burrowing into the axils of the grape and occasionally 



