THK (ANAlilAN HNTi iM(i[.( MUST. 37 



ENTOMOLOGICAL NOTES FOR 1882. 



liV PROF. K. \V. Cl.AVPOLE. 



My removal from Yellow Spring.s,Ohio,to New Bloomfield, Pennsylvania, 

 has had the eftect of breaking off the line of my entomological work, or at 

 least throwing it into a rather different channel. Among the first results is 

 a notice of the striking difference between the two places in regard to 

 insect depredations. In my e.xperience last year a great part of the time 

 was occupied u ith fighting insects. The cherry weevil, the potato worm 

 and beetle and the api)le %\ orm were the ringleaders ; but after them came 

 the blister beetles, the turni}) fiea, the corn worm, the squash bug, et niulta 

 alca. Here, at least during the present, or rather past season, the ravages 

 of all these have been quite insignificant. Foremost stands the potato 

 beetle. As soon as the young plants came up I followed my usual plan 

 of picking them off and dropping them into a tin having a few spoonfuls 

 of coal oil at the bottom. By this means they cause no trouble in crawl- 

 ing out again. Though the season was rainy, and therefore the opposite 

 of the last, yet I found two applications of the poison dust (1 part of 

 London purple and 60 parts of wood ashes) quite sufficient to keep the 

 plants free from the young grubs. I am inclined, however, to recommend 

 the use of plaster instead of ashes in a wet season. It seems to adhere 

 better to the leaves when rain falls on them. 



To my surprise there was here no second brood of the beetles this 

 vear. A few belated individtials appeared, but nothing that deserved the 

 name of a brood. Of course the earliest potatoes were ripe before the 

 usual second emergence, but the late ones grew and were green almost till 

 trost came, but were perfectly uninjured after the beginning of July. I 

 cannot learn if this is usual, for I can find no one who has been sufficiently 

 observant, or who is sufficiently acquainted with the habits of insects in 

 general, and with those of Doryphora lo-lineata in particular, to tell me. 

 They come, thev are here, they go. but when, why and how they come 

 and go is a matter which no one here seems to have considered. Another 

 year I shall try and make more general observations on this point. 



Not only is the potato beetle less mischievous here than it was in Ohio, 

 but all the others named follow suit. The apples are much less infested 

 with worms : blister beetles I have scarcely noticed ; corn worms are quite 

 innocuous, and as for the cherry weevil, though the crop this year was not 

 heavv for all kinds of cherries, and the fruit should, therefore, be at its 



