42 
JOURNAL OF ECONOMIC ENTOMOLOGY 
[Vol. 11 
NOTES ON THE STRAWBERRY LEAF-ROLLER 
(Ancylis comptana Frohl.) 
By R. L. Webster 
This common insect has been most reported from states of the Miss¬ 
issippi Valley. Elsewhere in this country it has caused little notice. 
In the course of some work with this species in Iowa much new data 
were secured. A more complete account is to be published in a forth¬ 
coming bulletin from the Iowa Agricultural Experiment Station. 
Most of the notes were taken at Ames in the last four years. W. 0. 
Ellis and J. L. Horsfall have assisted the writer greatly in taking rec¬ 
ords and in making observations. These notes are from the files of 
the Entomology section, Iowa Agricultural Experiment Station at 
Ames. 
Hibernation 
Many contradictory statements have been made as to the manner 
in which this leaf-roller hibernates. For instance Riley (1869) stated 
that the insect hibernated as the pupa. Forbes (1884) said that the 
moths hibernated, appearing on the wing early in spring. Stedman 
(1901) makes the definite statement that the insects winter as larvae 
in Missouri. Again M. H. Swenk (1908) says that the winter is spent 
as pupae and J. B. Smith (1909) indicates that in New Jersey the winter 
is spent as pupae. C. A. Hart (1911) states that it was determined 
that the larvae hibernate in central Illinois. 
The insect has been closely observed at Ames for several years, 
both in late fall and in early spring. Late in the fall (October), only 
larvae were found. Again in early spring (March) only larvae were 
present, pupae not appearing until mid April. For central Iowa, at 
any rate, it is evident that the winter is spent as larvae. 
The Generations 
Riley (1869) stated that two generations occurred in Missouri but 
Stedman (1901) indicated three. Garman (1890) showed that three 
generations occurred in Kentucky. Most writers have followed the 
old statement of Riley. M. H. Swenk (1908) gives three broods for 
Nebraska and C. A. Hart (1911) four in central Illinois. 
The overwintering larvae, which are nearly full grown, feed to some 
extent very early in spring but soon mature and transform to pupae 
and later (in April) to adults. The moths deposit eggs and the leaf- 
rollers appear in late May and during June. This first brood fre¬ 
quently becomes very abundant and often causes severe damage to 
