394 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 2 



Illinois, late June, early July (Hart, Coquillett). Chittenden secured 

 pupjB and moths from Libonia, Pa., May 3, 1898, but these were from 

 greenhouse roses. 



The eggs have been mentioned only by Hart, who states that the 

 eggs overlap in flat masses. Emmons stated that on plum the eggs 

 were laid in patches on the bark in June and July and remain there 

 until the next spring, but as he expresses a doubt as to whether the 

 species was really rosaceana, there seems no good reason to give 

 credence to this observation, which probably refers to A. cerasivorana 

 which has such habits.^ A second brood undoubtedly occurs thru- 

 out the range of the species. Cook mentions a second brood of larvae 

 in autumn, observing a larva as late as October 5, and Harvey and 

 Hart mention a second brood of larva? in AugTist. Coquillett reared 

 motlis of a second brood in late July and until mid-August in Illinois, 

 Packard reared a moth September 1 in Maine and Harvey states they 

 occur the last of July. Moffat found moths abundant at London, 

 Ont., in late July and early August, and Snow in Kansas on August 9. 



A second brood of moths thus give rise to larv^ which work in the 

 fall. Coquillett hazarded the guess that the eggs passed the winter, 

 but this is the only statement as to the hibernation except that Harvey 

 was candid enough to state that nothing was known of the eggs or 

 hibernation of the species. From the fact that the larvae occur in 

 fall and early spring and that many species of this family pass the 

 winter as larvae it seems probable, though we have no definite observa- 

 tions on the point, that the larva hibernate over winter probably 

 within folded leaves well encased in their own silk, either attached to 

 the tree or on the ground, altho they may hibernate under or at- 

 tached to the bark. It seems probable that even in a warm green- 

 house the majority of larvae do not transform in the winter, as Mr. 

 Montgomery of Natick, Mass., states that they have never been 

 troubled with them in winter, but that as soon as the spring sunshine 

 warms up the houses they commence to work. We are now making 

 observations on this point. It will be interesting to determine, as we 

 expect to do, whether more than two generations occur in greenhouses, 

 but our present data does not so indicate. 



Observations on the Life History 



The following observations on the life history were made during 

 August and early September, 1909. The eggs are laid in round or 



^Weed. Bulletin 81, N. H. Agr. Exp. Sta., p. 17. 



