153 



cigarette beetle. The adult is a small, brownish beetle 

 (Fig. 160) about T V~inch in length. To prevent injury 

 by this insect books should be treated with book solution, 

 and should be examined at least twice a year. Wherever 

 signs of this insect are found in the binding of a book, care- 

 ful search should be made until the grubs, pupae or adults 

 are found. If any fine black dust is seen, or any holes 

 or tunnels noticed, the presence of the cigarette beetle 



Fig, 1 60. Cigarette beetle. 



(a) larva ; (6) pupa ; (c) adult ; (d) adult, side view ; (e) antenna. All 

 greatly enlarged, (e) still more enlarged. (From U. S Dept. Agric.) 



should be suspected, and search should be continued 

 until it is certain that all the insects have been found. 

 Boxes and other articles made of cardboard ought to be 

 also carefully examined from time to time, and the insests 

 killed whenever found. Useless and discarded articles of 

 this sort should always be destroyed, preferably by burn- 

 ing, as they serve as breeding places for these insects. 

 Fumigation with carbon bisulphide is an excellent means 

 of destroying the cigarette beetle. 



THE DRUG STORE BEETLE (Sitodrepct pctnwea, Linn.). 



This beetle is a very destructive insect, similar in 

 appearance to the cigarette beetle, when examined with- 

 out the aid of a magnifying glass, and is much like it also 

 iu the various substances which it attacks. 



The insects (Fig. 161) attack cereals, food stuffs and 

 seeds, and also many articles and materials of greatly 

 varying nature. 



The larvae tunnel into books, cardboard boxes and 

 picture frames, aptf roots and seeds, such as ginger and 



