232 



INJURIOUS INSECTS 



named Botys Mcolor. The color is black, with an opal- 

 escent reflection, and the under surface differs only from 

 the upper in being less bright; all the wings are bordered 

 with white. The front wings of both sexes are each fur- 

 nished with two white spots; but while in the male 

 (fig. 143,4), there is but one large spot on the hind wings, 

 in the female (fig. 143, 5), this spot is invariably more or 

 less constricted in the middle, especially above, and is 

 often entirely divided into two distinct spots. The body 

 of the male has but one distinct transverse band, and a 

 longitudinal white dash at its extremity superiorly, Avhile 

 that of the female has two white bands. The antennae, 



2 J 



Fig. 143. GRAPE LEAF-FOLDER (Desmia maculaUs, West.) 

 1, Worm ; 2, Head, etc., enlarged ; 3, Chrysalis ; 4, Male ; 5, Female. 



as already stated, are still more characteristic, those of 

 the male being elbowed and thickened near the middle, 

 while those of the female are simple and thread-like. 



There are two broods in this latitude and probably 

 three farther south during the year; the first moths ap- 

 pearing in June, the second in August, and the worms 

 produced from these last hibernating in the chrysalis 

 state. The eggs are scattered in small patches over the 

 vines, and the worms are found of all sizes at the same 

 time. These last change to chrysalids in twenty-four to 

 thirty days from hatching, and give forth the moths in 

 about a week afterwards. 



The worm (fig. 143, 1), folds rather than rolls the leaf, 



