37 



honey-locust, thorn and apple . For several years 1 have 

 had a walnut tree in my yard and among the many 

 caterpillars and moths observed about it I have never 

 seen an example of the apple-infesting species. Nor have 

 I seen the present species on any other trees besides 

 walnut and hickory. 



REMEDIAL TREATMENT. 



The remedies to be recommended for injury by this 

 caterpillar are spraying the leaves with poisoaoas mix- 

 tures, and trapping the worms as they descend from the 

 tree. The great height of walnut trees makes thorough 

 spraying rather difficult unless one is well equipped for 

 such work. The greater number of worms descend along 

 the trunks of the trees during the night, and should be 

 destroyed whenever found collecting on the trunks. To 

 prevent the escape of those which do not collect in this 

 way I would advise the construction of a wooden frame 

 about the infested trees, similar to that which has been 

 used in the Eist for the elm leaf-baetle. 



A square frame could be fitted closely about the trunk 

 near the base, and the corners covered or filled to keep 

 the. caterpillars from going down this way Then by 

 tacking about its upper edges or along its outside a trough 

 of tin to be filled with coal oil, their descent might be 

 effectually prevented. Some of the worms drop to the 

 ground from the leaves, hence the desirability of spray* 

 ing the leaves when this is practicable. 



Locust Leaf- Miners. 



(^LithocoUetis robiniella, etc.) . 

 Locust trees in Kentucky seem to be peculiarly subject 

 to the attacks of several leaf miners, the adults of which 

 are small moths belonging to the same family as the com- 

 mon clothes moth. One or anot'her species is to be found 



