REPORT OF THE STATE ENTOMOLOGIST 1901 795 



Seneca county (J. F. Hunt, Kendaia) — Appletree tent-caterpillar 

 [Olisiocampa americana] eggs hatched Ap. 26, and 

 those of the forest tent-caterpillar [Olisiocampa dis- 

 stria] May 3. Canker worms [ ? P a 1 e a c r i t a v e r n a t a] 

 commenced work on appletrees about May 1. May 7. Cherry 

 aphids [M y z u s c e r a s i] have just begun to appear. Both 

 appletree and forest tent-caterpillars are less abundant than 

 last year. There are not so many nests of the former species 

 to be seen. The steely blue grapevine beetle [H a 1 1 i c a 

 c h a 1 y b e a] has not been seen this spring in localities where 

 it was abundant last year. May 17. Currant worms 

 [Pteronus ribesii] appeared May 20, and work of the 

 plum curculio [Conotrachelus nenuphar] is bow 

 evident, but this pest is not so injurious as in former years. 

 The forest tent-caterpillar in particular is not so abundant 

 as it has been in recent years. Bud moths [T m e t o c e r a 

 o c e 1 1 a n a] are more numerous than for years. Currant 

 worms and raspberry sawflies [M onophadnoides rubi] 

 are both scarce. The fruit tree bark beetle [Scolytus 

 rugulosus] is working quite abundantly in plum and peach- 

 trees, but not so badly, however, in the latter. The orchard 

 which the canker worms defoliated last year and in which 

 they appeared this year is now all right, the pests having been 

 controlled by two sprayings. May 29. The work of the Hes- 

 sian fly [Cecidomyia destructor] is now in evidence, 

 it having destroyed about one third of some species of wheat, 

 and there are but few curculio marks on apricots and plums. 

 Tent-caterpillars are showing up a little more abundantly than 

 was reported last week. There are no potato beetles 

 [Doryphora 10 - 1 i n e a t a] to speak of yet. The last 

 week of rain has apparently had no bad effect on the cater- 

 pillars. June 7. Eggs of the potato beetle are beginning to 

 hatch, and the parent insects are very plentiful. Tent-cater- 

 pillars are now leaving the trees and spinning cocoons. The 

 Hessian fly is very destructive in some pieces of wheat, while 

 in others not much is seen of it. Zebra caterpillars [Mam- 



