196 



represented is a useful addition to the chart for the purpose of teaching 

 the principles involved or when the amount of detail tends to become 

 confusing. 



Webster (R. L.). Notes on the Strawberry Leaf-Roller [Ancylis 

 comptana, Fr6hl.).^JZ. Ecoti. Entom., Concord, N.H., xi, no. 1, 

 February 1918, pp. 42-46. 



These notes on the life-history of Ancylis comptana, were made in 

 Iowa. Many contradictory statements have been made as to the 

 manner in which this moth hibernates ; in central Iowa it is now 

 established that the winter is passed in the larval stage. These larvae 

 after hibernating feed to some extent in early spring, but soon mature 

 and transform to pupae and reach the adult stage in April. The 

 first spring brood emerges in May, a second generation maturing in June, 

 a third in August and sometimes a fourth in September. Eggs are 

 deposited on the under-sides of the leaves and hatch after an incuba- 

 tion period of 3 to 12 days according to the temperature, the average 

 number of eggs per female being 73. The larval period consists of 4 

 instars and averages 20 days in July and August. The average 

 length of the pupal stage in April and May is 14 to 18 days, and in 

 the summer months about 6 days. A cool summer retards emergence 

 from the pupa, and a hot one accelerates it. Both sexes of the adult 

 moths live about 10 days in insectary cages. 



Spraying should be done early in May, before the larvae have 

 folded or rolled the leaves. After the leaves are rolled sprays are 

 largely ineffective. Arsenical spraying should be done before the eggs 

 of A. compkma hatch and previous to blossoming, or the poison will 

 destroy bees. 



Peterson (A.). Some Experiments on the Adults and Eggs of the 

 Peach Tree Borer, Sanninoidea exiliosa, Say, and other Notes. — 

 Jl. Econ. Entom., Concord, N.H., xi, no. 1, February 1918, 

 pp. 46-55, 1 fig. 



The majority of the experiments described in this paper were 

 conducted under two large wire-screen cages erected in an orchard 

 in New Jersey that was severely infested with Aegeria (Sanninoidea) 

 exitiosa. Adults emerged most freely about mid-August, always in 

 the early morning, and after pairing, which usually occurred within 

 1 to 24 hours after emergence, the females began to deposit eggs 

 averaging in number about 314. No adult, either in captivity or in 

 the orchard, was observed to feed at any time, nor could they be induced 

 to do so, although various substances were tried ; hence the improba- 

 bility of devising an attractive poison-bait for the moths themselves. 

 Certain chemical sprays were tried as repellents to prevent oviposition. 

 on peach branches ; these included scalecide, carbolic, lime-sulphur, 

 nicotine resinate, fish-oil soap, and fly-skat (a creosote compound). 

 The results are given in a table, and, while not very definite, they 

 show a partially repellent effect in the case of scalecide, lime-sulphur, 

 fish- oil soap and fly-skat. These, used on a larger scale, served to 

 reduce oviposition in some instances by 50 per cent, and even more, 

 though no material completely repelled the females. It was observed 



