84 



abvindant this season. The pest disappears about the first week in 

 July. 



The bagworni, TJiyrtdojJteryx ephemerceformis^ has been a serious 

 pest in many pUices in the State to arbor vitaj, apple, and locust. In 

 two instances it injured apple trees in the nursery rows. Hand pick- 

 ing was very effectual. 



The black peach aphis, Ajylils jyrunicola^ was quite abundant in 

 some young peach orchards in Maj'. 



In three cases a June beetle, Anomala hinotata^ was reported as eat- 

 ing the foliage from pear and apple trees. 



The red-legged flea beetle, CTej>ldod€ra rufipes Linn., was sent tome 

 from three localities where it was found injuring the foliage of young- 

 peach trees. The trees in all cases were planted on newly cleared 

 lands. 



The American elm scale, C%ionaspis ainericana 3o\i\\s.^ was sent to 

 me from Geneva, N. Y., and from Ames, Iowa, upon elm. 



An undetermined species of Zecan/odf'aspi.s'yyuii found by the writer 

 in Baltimore Count}" upon wild honeysuckle (Diervilla). 



An undetermined species of aphis and cutworm was found doing 

 serious injury to lettuce in a greenhouse in Montgomer}" County. 



INSECTS OF THE YEAR IN OHIO. 



By F. M. Webster, ]Voost('r, Ohio. 



In point of destruction the Hessian fl}" outranks every other insect, 

 when considered in connection with the wheat crop of 1900. It is 

 doubtful if there will be over 20 per cent of an average crop in Ohio; 

 the remaining 80 per cent may be largely charged up to the ravages 

 of this pest. As an average crop in Ohio amounts to, approximate!}^, 

 40,000,000 bushels, the loss may be computed at 32,000,000 bushels, 

 which at the ruling market price would mean a loss of $22,400,000, 

 at least three-fourths of which, or $16,800,000, can justly be charged 

 up to the ravages of the Hessian fly. iSIore extended studies of this 

 outbreak and some of the meteorological phenomena connected there- 

 with are given in another paper. The unprecedented abundance of the 

 pest this year may ))e attributed largely to the almost total lack of 

 parasites, the retardation of the fall brood over the northern half of 

 the State, and the extremely favorable weather during the autumn 

 of 1809, which enabled all but the very latest deposited eggs to hatch 

 and the larvffi develop to the "flaxseeds" and thereby defy the adverse 

 influences of winter. In many localities the later sown wheat escaped 

 fall attack, and up to May 1, 1900, was uninjured, but the flies devel- 

 oping in the earlier sown fields seemed to have migrated en masse and 

 settled down on those sown later, and the result is that in many cases 

 the destruction is as complete in the one as in the other. 



