2S0 R.Ei'0UT OF THE l^Ei'AUTMEXT OE E:,' ii;:.:oi.(!(; Y of the 



economic entomoloiry seldom occurs iu sufficient numbers to 

 attract much attention. One of the earliest references is by 

 Brunn\ who in 1883 found it in apple leaves in Tompkins County, 

 but not in sufficient numbers to do material injury. During the 

 past season we have received specimens from Monroe and 

 Orleans Counties. Its distribution in the United S-tates is indi- 

 cated by Forbes' report- in which he stateis that it is widely 

 distributed in Illinois, and in addition to New York is found in 

 Colorado, Kentucky, Michigan and Massachusetts. 



Appearance in Western New York in 1900. — This species was 

 first brought to the v/riter's attention early in October, when 

 some infested leaves were received from Brockport. The corre- 

 spondent stated that nearly all the apple orchards in the vicinity 

 of Brockport were badly infested. October 29 an infested apple 

 orchard at Albion was examined. On nearly every tree two- 

 thirds or more of the leaves were distorted by the mines of the 

 larvae. In many of the leaves from two to four mines were 

 found. Most of them were old, indicating that the larvie had 

 been working in the leaves several weeks. The owner of the 

 orchard stated that he had first noticed them about the middle 

 of October. In the vicinity of Geneva a number of apple 

 orchards were mildly infested, but no case of serious infestation 

 was found. 



Notes on life history and habits of the larvw. — The life history 

 of this species has not been fully determined. Probably the 

 most complete account is by Forbes,^ who states that the eggs 

 are laid on the leaves, and that the young caterpillars feed on 

 the parenchjana. When full grown they leave their old mines 

 and form new ones in which to pupate and pass the winter. No 

 description of the egg is given, and the time of egg laying is 

 not stated. No eggs were found on the branches received, and, 

 although a careful search was made, none in the orchards at 



^Cm-mil Univ. Agr. Exp. Sta., Second Ann. Rept. (1SS3), pp. 155-157. 

 -Fifteenth Ann. Kept. State Ent., 111., p. 59. 

 "Eifteenlh Ann. Rtpt. State Ent., 111., p. 57. 



