REPORT OF THE STATE ENTOMOLOGIST 1901 (89 
[Doryphora 10-lineata] are very numerous and destruc- 
tive. Grubs of the Pennsylvania soldier beetle [Chauliog- 
nathus pennsylvanicus]| were observed feeding on 
little green lice. I also think that they feed on the bud moth 
caterpillars, as a number were found in the foliage recently 
occupied by them. The Hessian fly [Cecidomyia de- 
structor]| is quite abundant in many fields. Two weeks of 
almost continuous rain have somewhat retarded the develop- 
ment of the insects. June 7. Late sowing does not appear to 
be a preventive for the Hessian fly in this section. One field 
sown Sep. 10 was attacked by the fly and stooled freely, but none 
_ of the plants died, while in later sown fields much of the wheat 
was killed by the fall brood of the fly; specially was this true in 
_-fields where commercial fertilizers were used, and where the: 
farmer was careless and allowed his fertilizer box to become 
empty part way across the field. A strip of Mediterranean 
wheat sown beside the other was very little affected by the fly, 
while the remainder (Gold coin) is badly infested. Canker 
worms are doing considerable damage in this vicinity. Two 
elms near by were defoliated by them. Appletree and forest 
tent-caterpillars are crawling about, but they are not abundant. 
Some cherrytrees are badly infested with plant lice, and their 
leaves are turning brown and drying up. Potato beetles are 
quite plentiful. Junel4. The plumcurculio [Conotrache-- 
lus nenuphar] has “stung” much fruit, and considerable 
of it is dropping, but for all that a full crop remains on the 
trees. The second brood of currant worms is doing consider- 
able damage. Caterpillars are spinning up and canker worms 
are going into the ground. Some wheat fields in this vicinity 
_ are badly infested by the Hessian fly, while others do not appear 
to have suffered much. June 22. 
Ontario county (J. Jay Barden, Stanley)—Appletree tent-cater- 
pillars [Clisiocampa americana] appeared Ap. 25; 
forest tent-caterpillars [Clisiocampa disstria] Ap. 273. 
canker worms [?Paleacrita vernata] May 6; and the 
common asparagus beetle [Crioceris asparagi] May 7. 
