115 



caused by the movement of the oral cilia bring the small pieces of food 

 to the mouth. The pupa? are extremely sensitive, shifting position 

 from the surface of the water with the slightest irritation. Length of 

 pupal stage, twenty-four hour-. 



The peculiar conditions best suited for the development of this species 

 of mosquito have not yet been found. Females fed in confinement upon 

 the blood of mammals in most cases died in a few days without depos- 

 iting eggs. Eggs procured in two instances were from females which 

 were engorged with blood a few hours before oviposition. 



To Dr. J. W. Dupree is due the credit for the information contained 

 in the above article. 



SOME NOTABLE INSECT OCCURRENCES IN OHIO FOR FIRST HALF 



OF 1902. 



By Herbert Osborn, Columbus, Ohio. 



The season is not far enough advanced to enable us to say what its 

 character as a whole may be from the entomological standpoint, but 

 already there have been several species appearing in such numbers as 

 to attract more than usual attention. 



The clover leaf -weevil, Phytonomus punctatus, has been unusually 

 plentiful, and during the middle of May the larvae were to be found in 

 large numbers on the university farm. This is, I believe, the first time 

 that this species has been destructively abundant in this locality. Its 

 work will therefore be watched with interest, and it is to be hoped that 

 it will repeat its usual history of being destructive for but one or two 

 seasons. 



The chinch bugs were flying in large numbers during the month of 

 May, being especially conspicuous from the loth to 20th. This abun- 

 dance was to be looked for, as they were very plentiful last autumn 

 and the winter was fairly favorable for their hibernation. Some 

 reports of destructive work in wheat have been received, but since 

 the heavy rains of early June these have been fewer, and there is per- 

 haps no very serious outlook at present writing for the remainder of 

 the season. 



The cankerworm continues to be a menace to the orchards, and in 

 many a very serious loss has occurred. There are a number of places 

 near Columbus where this insect is defoliating the trees each spring: 

 and while its work is much commented on at the time destruction i- 

 in progress, there seems a decided apathy on the part of a good many 

 of the orchardists with regard to suppressing their onslaughts. In a 

 number of places I have noticed their work also on elms, and the 

 increase and spread of the species certainly merit all the attention they 

 have received and a little more o( vigorous treatment on the part of 

 owners of orchards and timber plantations. 



