90 



margin of the leaf, which hatch into very small maggots. Their 

 irritaton causes the edge of the leaf to thicken and roll up forming 

 a kind of gall where the sap probably collects and furnishes them 

 with food. This insect was found quite as plentiful as the Hispa, 

 nearly every leaf having one or more of these galls on their edges 

 containing both larvae and pupae. 



This insect is possibly quite as injurious to the locust trees as the 

 Hispa, especially in marring the beauty of the foliage, as they at- 

 tack the young and tender leaves and prevent their development. 

 For this insect there seems to be no remedy. 



LOCUST LEAF MINERS. 



Six undetermined species of larvae were observed mining under 

 the skin of the leaves forming blisters similar to those formed by 

 the Hispa; different species having a preference for certain and dif- 

 ferent points on the leaf. One species, a small green larvae, is very 

 abundant at the present time (October 8th). Nearly every remain- 

 ing leaf being inhabited by one or more of them in blisters formed 

 on the upper surface over the mid rib. On September i2th, I ob- 

 served that this species was very plentiful in Wood county, the 

 trees turning brown as they were here in Morgantown in August. 

 The damage to the tree from this species, however, cannot be very 

 great from the fact that they attack the leaves about the natural 

 time for them to fall. 



THE LOCUST SKIPPER BUTTERFLY. 



(Eudamits Tityrus, Fab.) 



This is a medium size butterfly of rapid flight with a large white 

 or silver spot on the under wing, common in yards and along road- 

 sides during the summer. They deposit their eggs singly on the 

 leaves of the yellow locust, and the cultivated flowering variety, the 

 eggs hatching in a few days into worms, which when young, roll up 

 the edge of the leaves, and as they grow larger fasten two or three 

 leaves together forming a kind of tent in which they remain through 

 the day, coming forth to feed during the night. These worms were 

 found very plentiful on the locust trees here, and the butterfly was 

 found very common wherever the locust grew on our route through 

 the State. Harris says that this worm sometimes strips the leaves 

 from the common yellow and vicid locust trees. Spraying with 

 poison liquids would probably preserve our shade trees from the 

 structive attack of this insect. 



LOCUST LEAF ROLLERS AND PASTERS. 



Seven undetermined species were found rolling and pasting the 

 leaves together and feeding on the inner surface of their covering; 

 one or two species being very plentiful. 



