IsTew York Agricultural ExrEKiMENT Station. 435 



cation thorougli. Later, when the worms appear on the leaves, 

 Paris green may be applied at the usual strength, one pound to 

 150 gallons of lime and water, or combined with Bordeaux mix- 

 ture. Both upper and under surfaces of the leaves should be cov- 

 ered. 



GRAPE FRUIT WORM. 



(Eudemis botrana Schiif.) 



Description. — The young caterpillars feed within the grapes 

 finally causing them to turn dark colored and to wither. This 

 injury is sometimes mistaken for the black rot. After devouring 

 the soft parts of one grape the caterpillar goes to another, fasten- 

 ing the two together by a silken thread. This may be continued 

 until sev(M-al in a bunch have been destroyed by one caterpillar, 

 "^ilie Young caterpillars are very light green in color wuth a brown 

 head. When full grown they measure about one-fourth of an 

 ineli in length and are dark olive green in color tinged slightly 

 with red. The cocoon is formed on a leaf and is partially com- 

 posed of two small pieces cut out of the leaf. The adults emerge 

 in about ten davs. The fore wins's have a bluish tinge and are 

 marked with brown, while the posterior wings are dull brown. 

 'Jlie moths are small, measuring nearly half an inch from tip to 

 tip when the wings are spread. The eggs are probably laid late 

 in Juno or early in July. There is probably but one brood an- 

 nually in this State. 



TrcahnriiL — As the caterpillars spend most of their lives within 

 the grape berries, spraying will have little or no effect. There 

 seems to Ik- no better way than picking and destroying the infested 

 fruit and the leaves containing the cocoons. 



GRAPE LEAF HOPPER. 



(T}iphlocyhn rilifr.r Fitch.) 



There are several species of leaf li(>])])ors which attack the grape, 

 but this species is probably the most common in this State. These 



