252 



INSECTS INFESTING GltAIN. 



being destructive, though not living actually in the grain. The beetle is 



believed to be carnivorous, 

 attacking other insects found 

 in the granary. 



The "Sawtooth Beetle" 1 

 is so called from the toothed 

 appearance of the prothorax. 

 It is found in all stages, the 

 larvae running actively in 

 the grain, hiding when 

 exposed to light. It has been 

 recorded as destructive to 

 sorghum and other stored 

 produce. This is also a cos- 

 mopolitan pest. The Biscuit 

 Beetle, 2 a minute brown 

 insect found attacking bis- 

 cuits in Calcutta, is closely 

 related to the last species 

 and belongs to a cosmo- 

 politan genus. The Leather 

 Beetle 3 is a cosmopolitan 

 insect enemy of leather and 

 leather goods ; it attacks silk- 

 destructive to stored pupae of the 



FIG. 300. 

 The Rice Weevil. (Magnified.} 



worm cocoons in India 

 silkworm moth. Its 

 larvae are very hairy, 

 distinct in appearance 

 from those of the preced- 

 ing beetles. 



A dermestid 4 closely 

 allied to the last is 

 reported from India in 

 wheat. This or the last 

 is the insect found in 

 grain in Gujarat, where 

 it is believed to be of use 

 in checking other grain 



and 



FIG. 301. 



Bice Weevil. (Magnified.) 



1 Silvanus surinamensis, L. (Cucujidse.) 



2 Ltemophloeus pusillus. F. (Cucujidffi.) 

 8 Dermestes vulpinus. F. (Dermestidaj.) 



4 JZthriostovna undulata. Motsch. (Dermestidaa,) 



