576 INSECT PESTS OF FARM, GARDEN AND ORCHARD 



by several borers, the foliage turns yellow and if not treated will 

 soon die. Such a tree is much more susceptible to the attacks 

 of bark beetles and diseases. Probably as many peach trees 

 are lost from the work of borers as from any other one pest, with 

 the possible exception of the San Jose scale. 



The adults are clear-winged moths which fly during the day 

 and might be readily mistaken for wasps. The females are a 

 deep steel-blue with a broad orange band across the abdomen. 

 The fore-wings are opaque, covered by the bluish scales, and 





FIG. 507. Peach borer moths (Sanninoidea exitiosa Say) natural size. 

 The upper one and the one at right are females, the other two males. 

 (After Slingerland.) 



expand about IK inches, while the hind-wings are transparent 

 except the dark margin. The males are smaller, with the wings 

 clear except the margins and a line across the fore-wings, and 

 the abdomen is marked with three or four narrow yellow stripes. 

 Life History. The moths emerge in New York and New Jersey 

 from the middle of July to the latter part of August, at Wash- 

 ington, D. C., from the middle of June until mid-September, 

 the majority emerging in late July, while in Georgia the majority 

 emerge in late August and early September. As there is but one 



