ISTew Yokk Agricultural Experiment Station. 413 



ond brood. These are sometimes very abundant in late summer 

 and in autumn. The adult is a small brown moth measuring 

 about f of an inch from tip to tip when the wings are spread. 



Those who wish an exhaustive treatise on this insect should 

 consult Prof. Slingerland's bulletin.*' 



Treatment. — A considerable percentage of the worms can be 

 killed by spraying within the first week after the blossoms have 

 fallen. The calyx end of the fruit must be filled with the poison 

 before the calyx lobes close, hence much pains should be taken 

 to make at least one thorough application before that occurs. 



GREEN fruit WORMS. 



(Xylina sp.'^) 



Descriptions. — These insects sometimes do serious injury by 

 eating into the young apples. They also attack pears, plums, 

 peaches and quinces. The full-gro^vn caterpillars measure from 

 an inch to nearly an inch and a half in length. They are green 

 or yellowish green in color with various irregular markings and 

 stripes, the most prominent of the latter being a narrow, cream- 

 colored one down the middle of the back and a wider one along 

 each side. 



The caterpillars are most abundant during May, soon after the 

 fruit has formed. They continue feeding until about the middle 

 of June. They feed mostly at night, resting on the under sides of 

 the leaves during the day. When full grown they go into the 

 ground, form a rough cocoon and pupate. The adults, which are 

 dull-colored moths measuring about two inches from tip to tip 

 with the wings spread, come forth in the fall and remain over 

 winter in some sheltered place, laying their eggs in the spring. 



Treatment. — These insects have proven difficult to control. 

 Experiments by Lowe with Paris green, one pound to 100 gal- 

 lons of water, applied to the infested trees when the caterpillars 



G Loc. cit. 



7 For a more complete account of these insects, see Cornell Univ. Agr. Exp. 

 Sta. Bui. No. 123, by M. V. Slingerland. 



