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REPORT OF THE STATE ENTOMOLOGIST I907 29 
caterpillar is most easily recognized by the apposed halves of in- 
fested leaves, their edges being held together by strands of silk. 
Early history. The dark brown, white marked moth was first 
described by Clemens in 1860, and the first record of injury is 
given by the late Prof. Charles V. Riley, who in March 1877, re- 
™ ceived specimens from Mr O. C. Chapin of East Bloomfield, 
Ontario co., N. Y. with the statement that in 1876 the trees were 
seriously injured, one fourth of the leaves being infested. The same 
year Professor J. H. Comstock of Cornell University, Ithaca, N. Y. 
noted that the species was common in some orchards of New 
York State. It also appears to have been numerous in Wisconsin 
in 1878, since Dr P. H. Hoy writes of it as a serious orchard 
pest. Dr J. A. Lintner, in his report for 1891, records a case where 
about one half of the leaves of an orchard at Palmyra, Wayne 
co. were infested by this species, though he considers the insect 
of comparatively slight economic importance. This leaf folder 
has also been recorded as abundant in Ontario (Canada) orchards 
in 1895 and again in 1903. 
Description. The parent moth has a wing spread of about 
34 of an inch, is dark brown and the forewings are marked by con- 
spicuous white areas near the anterior margin and on the posterior 
margin near the extremity with a rather broad, oblique, whitish 
stripe. The original description by Clemens follows: 3 
Forewings white with a dark brown dorsal patch extending from 
the base to the middle of the wing, with its costal edge irregular 
or doubly curved. The oblique central fascia is almost obsolete 
except on the middle of the costa where it appears as a dark 
grayish brown spot, and in the middle of the wing beneath it is 
a grayish brown round spot exterior to which is a short black 
dash. The wing above the inner angle is varied with grayish brown 
and brownish. The costa exterior of the middle is alternately 
streaked with white and brownish, becoming reddish brown. toward 
the tip. Extreme apex reddish brown. 
Pupa. The yellowish brown pupa of this species has been 
described by Professor Riley practically as follows: Length 34 of 
an inch. The wing sheaths extend to the fourth abdominal seg- 
ment, the antennal sheaths not quite so far. The anterior and 
posterior borders of each abdominal segment are armed dorsally 
with a transverse row of minute decurved spines, anal segment 
quite sharp. . 
Larva. Length about % inch. .Head a yellowish orange, 
thoracic shield yellowish, the body a variable fuscous yellowish 
