{Onontota nervosa, Panw, Fig. 2.} 



Found quite plentiful with the locust hispa feeding upon the sur 

 face of the leaf. Nothing further has so far been observed of its 

 habits. 



THE LOCUST BORER. 



(Clytus Robinat, Forster, Fig. j.) 



This beautiful "black velvet and gold beetle" is found feeding on 

 the blossoms of golden rod in September. It deposits its eggs on 

 the branches and trunk of locust trees. The eggs hatch into grubs 

 which bore into the green wood where they feed, and if plentiful 

 often cause the death of the tree. Many trees have been observed 

 in and around Morgantown partly and completely dead, caused ev- 

 idently by this insect. The grubs were observed early in the season 

 within the green wood and the beettes were found quite frequent on 

 the golden rod in September; but this insect is probably not doing 

 much damage to the locust at present in the region infested by the 

 Hispa. 



This beetle according to Harris, Packard and Riley is "by far 

 the most destructive pest of the locust." It "has nearly extermi- 

 nated the locust in New England" and "nearly all the locust groves 

 in the west have been destroyed by it." 



Should this insect, therefore, appear in any great numbers in dis- 

 tricts like the one mentioned, where the vitality of the trees would 

 naturally be weakened from the loss of leaves, the locust would 

 certainly be doomed to destruction. 



Shade trees could probably be protected from the ravages of this 

 insect by spraying the trunk and branches with a strong solution of 

 soit soap and water during the period in which the beetles deposit 

 their eggs, which is supposed to be between the last week in August 

 and the first week in October. Two or three applications during 

 this time would very likely prove successful. This, like the remedy 

 for the Hispa would, however, only be practicable to apply to a few 

 choice shade trees. For a general remedy, we must look as before 

 to the natural enemies of the insect. 



THE LOCUST-TREE CARPENTER-MOTH. 



(Xyleutes Robinat, Harris.} 



This is a large night flying moth. It deposits its eggs in July on 

 the bark of mature but healthy trees. The worms, according to 

 Dr. Asa Fitch, on hatching from the egg sink themselves inward 

 and feed at fiirst on the soft inner part, until when their jaws ac 

 quire more strength, they penetrate to the hard sap wood and finally 

 resort to the solid heart-wood, residing mostly in and around the; 



