TRUCK-CHOP INSECTS 
MISCELLANEOUS FEEDERS. 
PAINTED LADY BUTTERFLY (Vanessa cardui L.) 
Ohio T. H, Parks (June 29): These larvae are now devouring Canada 
thistles in the northwestern quarter of the State. Many counties 
report thistles "being davoured during the last week of June. 
The larvae are also reported feeding on plantain and timothy 
to a small extent, Caterpillars were pupating June 29. No 
migration of "butterflies was reported. 
Michigan R, H* Pettit (July 1): This State is, experiencing an outbreak 
of a "butterfly larva which I suspect is Vaness a cardui. The 
larvae have appeared in the western part of tthe State in such 
numbers that they practically covered the ground and have been 
the occasion of much excitement among county agents and growers 
who expect the larvae to attack oats, corn, and other valuable 
crops just as soon. as they finish on thistles. The thistles 
have been completely killed out in many fields and very marked 
good has been done at the expense of a small amount of peppermint 
and soybeans. Down in the peppermint belt at Mentha it was 
necessary to spray some new fields of peppermint in order to 
save the 'stand. However, the amount of real damage done by this 
creature is negligible and the amount of good very great. This 
larva happens to be here at the time when armyworms are starting 
in to make trouble and, unfortunately, the two are confused. 
(July 22): Cur larvae -atf thistles, which proved to be Vanessa 
_cardui, are through working and the adults are now flying. 
Great good has resulted from the enormous numbers which worked 
over the State this year. 
Indiana J fc JI, Davis (July 22): Additional reports on therthistle 
caterpillar show that this caterpillar occurred throughout the 
State and attacked especially Canada thistle, burdock, and 
hollyhock. No injury to cultivated crops has been reported, 
excepting in one instance the county agricultural agent at 
Angola, in the extreme northeastern corner of the State, reported 
injury to a field of tansy. 
Indiana H* E, Dietz (July): The thistle caterpillar was responsible 
for considerable injury at Indianapolis and other points to 
ornamental plants such as Mexican thistle ( Echinops ). bugloss 
(Anchasa), and hollyhocks. 
Illinois W. P. '_-iint (July 21): Adults of this species were wry 
abundant in May and the larva was more abundant than ever before 
recorded from this State. The area over which they occurred 
in gr***te«t numbers wu-^-conf inod- t^> the: .nqrthem two-thirds ' .. . 
of the State. Larvae were found feeding on dog fennel, thistles 
of all species, burdock, cocklebur, hollyhock, and sunflowers. 
In one case larvae of this species almost completely defoliated 
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