356 JOURNAL OF ECONOMIC ENTOMOLOG\ [Vol. 15 



QuAiNTANCE, A. L. and Brues, C. T. 



1905— The Cotton Bollworm. U. S. Dept. of Agric, Bu. Ent. Bull., 50, pp. 1-155. 

 Forbes, S. A. 



1905 — A Monograph of Insect Injurious to Indian Corn, Part II. Twentv-third 

 Rept. State Ent. 111., p. 169. 

 H.WES, W. P. 



1920^ — Solenopsis molesta Say (Hym.). A Biological Studv. Kans. Agri. Exp. 

 Sta., Tech, Bull., 7, pp. 3-55, figs. 11. 

 MCCOLLOCH, J. W. 



1921 — The corn Leaf Aphis {Aphis maidis Fitch) in Kansas. Journ. Econ. Ent., 

 14:89-94. 



CONTROL OF THE STRAWBERRY LEAF-ROLLER 

 IN THE MISSOURI VALLEY 



By F. M. Wadlev 

 Scientific Assistant, Bureau of Entomology, U. S. Department of Agriculture 



Introduction 



This paper is the result of work done in Kansas in 1917 and 1918, 

 and in Iowa in 1919, by the writer while engaged in truck-crop insect 

 investigations in the Bureau of Entomology, United States Department 

 of Agriculture. The Strawberry leaf-roller {Ancylis comptana Frohl.) 

 in the adult stage is a small reddish brown moth with intricate mark- 

 ings; the larva, a nearly smooth caterpillar, slender, and reaching 

 a maximum length of one-half inch. The larvae vary from light green 

 to dark olive green. The species is distributed over all strawberry 

 growing regions of North America. 



The life-cycle stages in summer in southern Kansas are about as 

 follows: egg, G days; larva, 22 days; pupa, 7 days. Several days 

 are required for the pre-oviposition period, and a generation in summer 

 required about 40 days. Stages are much longer in cool weather. 

 R. L. Webster^ has secured an average of 75 eggs per female in the in- 

 seetary, and an average adult life of 10 days. The pale green egg is 

 deposited on the leaf; the larva feeds, usually on the under surface, for 

 about a week after hatching. It then draws the leaf together and webs 

 it up, working on the upper surface. In this protected situation, it 

 feeds and grows, and if not disturbed, will reach the adult stage before 

 leaving. It never eats through the leaf, but injures it by webbing and 

 feeding on the surface. 



The nearly grown larva hibernates in the leaves and pupates early 

 in the spring in Kansas, emerging during April. It seems likely that 

 four generations occur, but that some of the last larvae of the third 



iWebster, R. L., 1918. Journal Econ. Entom.. Vol. 11, pp. 42-45. 



