THE APPLE LEAF-MINER 53 
The various writers are optimistic concerning this insect. 
Professor Weed says: “I doubt whether the injuries of this 
insect in the orchard are ever sufficiently serious to repay the 
labor required for the application of the only remedy for the 
pest now known—that of gathering and burning the fallen 
leaves—although I believe this operation would pay in the 
nursery, where the leaves can be easily gathered, and several 
injurious species would be destroyed at the same time.” Re- 
ferring to all the jeaf-mining species of the apple, Felt* says : 
“All of these species appear on the foliage so late in the sea- 
son that comparatively little injury is caused and, as a rule, 
no remedial measures are necessary.” Brunn writes, “This in- 
sect is the most abundant of the Tineidae infesting the apple 
trees at Ithaca, nevertheless it is not abundant enough to do 
any material injury.” 

Fic. 17—A mine broken open, exposing the larva. The linear por- 
tions of several other mines are very prominent. The body of the 
mines do not show as distinctly (slightly enlarged). 
*N. Y. State Mus. Bul. 97, p. 405, 1905. 
