84 
The species was first found injurious to the apple by the 
writer and Mr. E. S. G. Titus in 1901 at various points in the 
apple region of the southern third of Illinois, when, as assistants 
of the Entomologist's office, we were making a study of apple in- 
sects in that part of the state. It was again found the following 
season by Mr. Titus, and by Mr. E. P. Taylor in 1905, thruout 
the same region, and in western Illinois by the writer in 1906. It 
was at first supposed to be Orchcstcs palliconiis Say. and the first 
published account of its injuries appeared under that name in the 
Transactions of the Illinois State Horticultural Society for 1901. 
APPEARANCE AND AMOUNT OF INJURY 
The completed mine (Fig. 21) is conspicuous as a rather bright 
red blotch about one-fourtli of an inch in diameter, somewhere 
along the margin of the leaf near its outer end; and the pupal 
chamber is indicated by a dark brown gall-like swelling near the 
Fig. 21. Apple Flea-weevil, Or- 
cheste/i canux. mine of larva in apple 
leaf. 
center of this blotch. Often the small passage mined by the newly 
hatched larva is seen leading from the inner part of the leaf to the 
mined area. • Mr. Taylor noticed that there was always a small 
swelling on one of the principal veins near the point where the 
larva first began to mine the leaf, and he assumed that this indi- 
