THE TOBACCO BEETLE. 5 



Smoking and chewing tobaccos often become badly worm-eaten 

 (fig. 1). In the pressed kinds galleries are formed, and in chewing 

 tobacco the wrapper is cut and the edges furrowed (fig. 2). Granu- 

 lated and fine-cut tobaccos become mixed with the dust and refuse 

 from feeding and with dead bodies of the adults. Pupal cells occur 

 on the sides of the container or in the tobacco. Holes are found in 

 the paper or tin-foil wrapping. 



Leaf tobacco is afi^ected in much the same manner as cigars (fig. ?,). 

 The larva? bore holes in every direction through the leaves, and the 

 tobacco becomes soiled with dust and refuse. Fine wrapper becomes 

 worthless. In leaf tobacco used for filler, for manufactured tobacco, 

 or for .snuff, the damage is confined more to the tobacco actually con- 

 sumed b}' the ]arva» than it is in the manufactured products, the mere 

 sign of infestation making the finished product unsalable and 

 worthless. 



DESCRIPTION OF THE INSECT IN ITS DIFFERENT STAGES. 



The egg. — The egg of the tobacco 'beetle is a small, pearly white, 

 oval object about one-fiftieth of an inch in length. Owing to its 

 small size and to the fact that commonly it is laid in creases or folds 

 of the leaf, it is not seen readily, and to many persons familiar with 

 the other stages of the insect is an unfamiliar object. 



The larva., or grub. — The larva, grub, or worm stage of the insect 

 is most likely to be noticed in infested material. The larva when 



smokinsj tobaccu showing burrows of lurva^ aud exit holes of 

 adults of the tobacco beetle. 



