40 Journal New York Entomological Society. [Voi. xxviii. 



pending on the way the leaf was rolled. Sometimes the entire tissue 

 was eaten. Strauss makes no mention of the leaf-rolling habit in 

 connection with its injury to grape foliage in the east, but according 

 to Quayle,2 in California the leaf is distinctly rolled and not folded 

 over on the upper surface and fastened down by strands of silk as 

 it is in the east. In addition Quayle states that the free edge is 

 consumed. On primrose in New Jersey both the free edge and the 

 inner surface of the rolled leaf were eaten. 



During the first week of July our specimens became full grown 

 and each pupated in a cocoon formed by the cutting of the leaf in 

 two places from the midrib to the edge and the folding of this flap 

 over to the opposite edge of the leaf. About twelve days were re- 

 quired for the pupal stage, the first moths issuing on July i8. Ac- 

 cording to Strauss, the full-grown first brood larvse leave their 

 shelters on grape and drop to the ground where they transform 

 among the fallen leaves, trash, etc., and in exceptional cases a larva 

 may web several leaves together and pupate within or it may pupate 

 within the folded leaf where it has fed. The pupae of the second 

 brood are also found among dead leaves and hibernation takes 

 place in this stage. 



Unfortunately the second brood pupae on primrose were not ob- 

 served, and it is not known whether a cocoon is made or not. A 

 second brood undoubtedly occurs in New Jersey because adults 

 were found during the middle of July and larvse during August. 

 From the foregoing it is apparent that the habits of the larvse vary 

 considerably within certain limits. In addition to wild and culti- 

 vated grapes, other recorded food plants are Virginia creeper and 

 redbud. The following brief descriptions are adapted from Strauss. 



Egg. — Length 0.7 mm., elliptical, membranous chorion presenting 

 under high magnification, delicate, hexagonal markings. 



Full Grown Larva. — Length about i inch; widest in middle and 

 tapering toward either end; glossy, transluc'ent yellow green on 

 sides and somewhat darker above, with scattered, fine, yellow hairs 

 on each segment; the head and prothoracic shield are light brown 

 and there are. light brown spots on the sides of the first two thoracic 

 segments. 



2 Quayle, H. J., Bui. 192, Cal. Agric. Exp. Sta. 



