INSECTS INJURIOUS TO TOBACCO 



237 



can. This should be applied frequently, especially after heavy 

 rains. Large buds should be opened and a pinch of the poison 

 placed within. When spraying or dusting with an arsenical is 

 practiced against the hornworms it will aid in the control of the 

 bud worms, and may be advisable for them alone where injury is 

 serious. Powdered arsenate of lead has been used against both 

 these insects with considerable success and will doubtless obviate 

 the burning which has been experienced when using Paris green 

 with corn-meal. When the injury by the false budworm occurs 

 only late in the season, it would seem that the moths might be 

 attracted to a trap crop of late corn in the same manner as cotton 

 is protected from it (page 257) . 



The Tobacco Leaf-miner * 



The larva of a small moth has become quite injurious in parts 

 of North Carolina and Florida by mining the inside of the leaf, 



FIG. 170. Tobacco leaf-miner or split-worm, adult moth above; larva below 

 at right; pupa below at left, with side view of enlarge 1 anal segment all 

 enlarged. (After Howard, U. S. Dept. Agr.) 



and is thus known as the Tobacco Leaf-miner. This insect occurs 

 in other parts of the country, but has become injurious only in the 

 States named and in recent years. The injury is done by the 



* Phthorirrue operculella Zell. Family Tineida. 



