186 Forty-seventh Report on the State Museum 



would naturally tend to the multiplication of the hop aphis, as was so 

 markedly illustrated in 1886. - 



" The hop growers have therefore been advised to keep close watch 

 for the first appearance of the hop aphis on the upper leaves of the 

 outer rows of their hop yards. They will probably be seen there about 

 the last of May or the first of June as full-grown, winged females, 

 which have just flown from neighboring plum trees, where the winter 

 had been passed in the egg and the early spring as wingless females. 



" If these, the mothers and progenitors of a number of successive 

 broods through the summer, are killed at this time by proper spraying 

 with stiitable insecticides — in the proportion that they are destroyed 

 will subsequent injury to the crop be prevented. 



" It is said that in England the hop growers do not attempt to grow 

 a hop crop without their regular 'hop washings,' which we call 

 spraying." 



Keports of unusual abundance of aphides on fruit trees came 

 from the following counties, indicating that they were not con- 

 fined to any particular part of the State : Westchester (on apple 

 and cherry in June), Dutchess, Schoharie (buds literally covered 

 in June), Schenectady, Chenango (on apples and pears in May), 

 Oneida and Onondaga in May, Madison, OsAvego, and Chautauqua. 



Of the hop vine aphis, P/iorodo7i humuli, the most severe injury- 

 seems to have been caused in the southern part of Dutchess 

 county, where hop yards were entirely stripped, save here and 

 there a blackened, perforated leaf of a new shoot. Nothing was 

 done to stop the ravages of the insect ; so quickly did it do its 

 work that it was almost done before it was discovered. The 

 crop is an entire failure {Neio York State Weather Cro]) Bulletin, 

 July 8th, 1893). In Madison count}'^ the destruction of the 

 crop was threatened in early July, but a more favorable condi- 

 tion was reported later. Spraying was resorted to in several of 

 the counties — in Franklin and others — with gratifying results. 



A Grasshopper Plague in Western New Yoek. 



It has been a remarkable year for grasshoppers. Their abun- 

 dance in the western part of the State, where dry weather has 

 prevailed to the extent of severe drouth, has made them a veri 

 table plague. It is very unusual that occasion arises for com- 

 plaints of injuries from thpm to crops in the State of New York. 

 About the middle of July they were reported as numerous in the 



