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FRUIT TREE" LEAF ROLLER ( Arc hips argvrospi la Wlk.) 
New York. N. Y. State Coll. Agr. News Letter (April): The first larvae 
were found on April 25 in Rockland County, in the eastern part of the 
State. In Niagara County the first egg masses were numerous in a number 
of apple orchards on April 13 » and some have been deposited on nearby 
cherries, prunes, and pears. 
Wisconsin. J. A. Callenbach (April 27): Eggs began hatching in Crawford 
County on April 24 • Trees in early closed- cluster stage. 
Missouri. L. Haseman (April 24): In the northeastern part of the State 
the first eggs began hatching on April 16 and in the central part on 
April 17 • 
PISTOL CASEBEARER ( Coleophora malivorella Riley) 
Pennsylvania. H. M. Steiner '(April 24): Infestation extends over more 
than 3,000 acres of an Adams County apple orchard, with prospects of 
heavy defoliation in several hundred acres. Parasitization of overwintered 
larvae is much higher than in previous years of the outbreak, ranging from 
18 to 40 percent in the observed orchard with species that should greatly 
increase their numbers during the blossom period. First casebearer feed- 
ing was observed April 3* 
APHIDS (Aphiidae) 
New York. N. Y. State Coll. Agr. News Letter (April 20): At Poughkeepsie, 
on April 16, eggs of the three species of apple aphids appeared to be 
slightly more numerous than usual. Aphid' counts at Ithaca on apple trees 
in the college orchard showed the proportion of rosy aphid ( Anuraphi s 
roseus Baker) to green ( Aphi s pomi Deg.) and grain aphid ( Rhopalosiphum 
prunif oliae Fitch) is high. (April 27): In Niagara County rosy aphids 
are fairly abundant on apple at present, in high proportion to the grain 
and green aphids. Syrphid fly eggs observed, and a number of ladybugs. 
In Monroe County, although other aphids died during the cold weather, 
rosy aphids are very abundant. During the week beginning April 12 the 
rosy aphid was steadily increasing. 
Michigan. R. Hutson (April 24): Green aphids are numerous in all the west 
coast orchard area. 
Pennsylvania. H. M. Steiner (April 24): A. roseus makes up most of the 
aphid population in many apple orchards in Adams County, and the scarcity 
of predators indicates that severe damage will occur in several unsprayed 
orchards . 
Virginia, A. M. Woodside (April 13): Eggs of the rosy apple a.phid began 
hatching about March 31 in Augusta County. Aphids are less common than 
usual on apple, the rosy aphid being the most common. 
W. S. Hough (April 25): First generation of the rosy apple aphid 
was present in a number of orchards and indications are that damage will 
be severe in May where the proper control measures were not applied in 
the dormant and delayed sprays. Other apple aphids are almost entirely 
absent . 
Indiana. L. F. Steiner (April 16): The apple grain aphid (R. prunif oliae ) 
is abundant in some orchards in the Vincennes area. (April 29): No rosy 
apple aphids observed. The grain aphid is now migrating from apple. 
Wisconsin. J. A. Callenbach (April 20): Eggs of the apple grain aphid were 
hatching on April 14 in Crawford County. Infestation is the lightest ob- 
served in recent years. 
LIBRARY 
■Ww; . ___ STATE PLANT BOARD 
