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THE FARMERS HANDbuOK. 



INSECTS THAT ATTACK MAIZE IN STORE. 



The following are the insects that attack maize in store : — 



Grain Weevil (Calandra oryzce Linn.). 

 Angoumois Grain Moth (Sitotroga 



cerealella Oliv.). 

 Red Flour and Grain Beetle (Tribolium 



ferrugineum) . 

 Broad-horned Flour and Grain Beetle 



{Grnathocerus [Echocerus] cornutus 



Fab.). 



Lesser Grain Borer (Rhizopertha 



dominica Fab.). 

 Saw-toothed Grain Beetle (Silvanus 



surinamensis Linn.). 



Flat Grain Beetle (Lcemophlaus 

 sp.). 



Meal-worm Beetle (Tenebrio 

 molitor Linn. ). 



Cadelle Beetle (Tenebroides mauri- 

 tanicus Linn.). 



Carpophilus hemipterus. 

 Cryptophagus sp. 

 Typhce fumata Linn. 

 Mites. 



Grain Weevil {Calandra oryzce). 



This insect is a most serious pest of both wheat and maize, and is a 

 small black beetle about one-sixth of an inch long. The female beetle 

 punctures the grain with her snout, and then turns round and deposits her 

 eggs. Each egg hatches into a tiny white legless grub. These grubs eat out 

 the centre of the grain, eventually change into puppe, and finally, still within 



Common Grain Weevil (Calandra oryzce). 



Typical damage due to Grain Weevil 



(Calandra ort/zie). 



