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Pennsylvania 
TTE-MARKED TtJSSOCK MOTH ( Herrerocenoa leucosti — a S.& A.) 
E. E. Frane (July 10): There are fer/ specimens of this insect 
present in "Tayne County. 
J. J. Davis (July 27): 
Franklin July a . 
The tussock moth was reported from 
E, L. Chambers (July 25): The white-marked tussock moth is 
more abundant than usual this year and seems to be pretty well 
established over the State. The larvae are fairly well devel- 
oped now and many have pupated. 
M. H. Swenk (June 15-July 15): The white-marked tussock 
moth was first reported doing serious injury on elm trees in 
Lincoln on June 29. Other reports were subsequently received 
from other localities during the period covered by this report, 
CANKERWORMS (Geometridae) 
G. H. Salisbury (July 2) : Cankerworms are les: 
formerly in Chautauqua County. 
active than 
A. R. Champlain through T. L. Guyton (July 6): Cr.nker.vorra 
injury was very evident in northwestern areas of Pennsylvania 
visited on inspection trips during June. From Tyrone to Pux- 
sutawney and Belleville both orchards and forest trees showed 
considerable browning and defoliation. A variety of deciduous 
trees were affected, including apple. On the dates, June 20 
to 23, the or terpillars were about full grown and many were 
descending to pupate. These caterpillars come from the trees 
on threads of cilk, and it is impossible to walk or drive under 
the trees without bein?; covered with them. The egg parasite 
Trichogramma mi nu turn Riley has not, so far, been found under 
natural conditions. 
T. L. Guyton (July 30):An interesting observation in connec- 
tion with the a:ove cankerworra ii : ion was the presence of 
a predacious ground beetle, Calosoma frigidu: Lfl use- 
ful insect wi v ry plentiful in all localities the c 
kerworms v:ere present. It is no doubt a valuable as^et in re- 
ducing t; orm hordes and should be protected. ny of 
these b( re found on the trees and foli id on the 
ground, feeding on the c I urra 1 The . B ob- 
served a ties of C-losoma beet] "s during a 
cankerworm outbreak on scrub oaks oneot- 
icut C. willcoxi Luc. and 0. Lidum were plentiful dur. 
canxerworm r I in that ' te . In B these beetles 
consumed great numbers of the worms. It 
to remember that Calor y . orted 
Europe to combat the moth in New En.' I 
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