REPORT OF THE STATE ENTOMOLOGIST 1901 785 



been observed in this locality, but they are comparatively very 

 rare. Currant worms [Pteronus ribesii] have appeared 

 on currant bushes. The currant aphis [M y z u s r i b i s] is not 

 very abundant. May 21. Tent-caterpillars are comparatively 

 scare thus far. A few forest tent-caterpillars were noticed in 

 Poland 4 miles away. The appletree bark louse has also proved 

 quite injurious to cultivated mountain ash and Crataegus in a 

 yard. One orchard near a forest undergrowth is about equally 

 infested with the appletree and forest tent-caterpillars. The cold 

 seems to have kept the tent-caterpillars in check, but plant lice 

 are very numerous and injurious. May 31. Colorado potato 

 beetles [D o r y p h o r a 10 - 1 i n e a t a] first appeared in con- 

 siderable numbers May 26. Tent-caterpillars are relatively very 

 scarce. The prolonged rainy weather seems to have kept some 

 insects in check severely, though currant worms are plentiful and 

 quite injurious. June 6. Cabbage butterflies [P i e r i s r a p a e] 

 were noticed June 13, and on the 18th rose beetles were quite 

 abundant. The onion thrips [Thrips t a b a c i] is working on 

 our lettuce. The first grubs of the Colorado potato beetle were 

 seen June 13. Grasshoppers seem to be more plentiful than last 

 year and currant worms are unusually abundant. Not a cocoon 

 of either tent-caterpillar has been observed. June 19. Squash 

 bugs were first observed on the vines June 16. Grasshoppers 

 are very plentiful, but so far no particular injury has been done 

 by them. Potato beetles are unusually numerous. Rose beetles 

 [M a c r o d a c t y 1 u s s u b s p i n o s u s] are attacking the ap- 

 pletrees and rapidly devouring the small apples. June 27. Rose 

 beetles have now disappeared, and it does not seem as if 

 they had caused much injury. Grasshoppers are reported very 

 numerous in the valleys but not on the hills. The spinach flea 

 beetle [Disonycha collaris] has been quite abundant in 

 this vicinity. July 13 two specimens of the praying mantis 

 [Mantis religiosa] were observed in this place, undoubt- 

 edly coming from the eggs sent me last spring, though I have 

 been unable to find any young from their egg clusters. JHiIy 13. 

 Caterpillars of the white marked tussock moth [N o t o 1 o p h u s 



