— 8 — 



ii in the field or "ii the stored grain in bins and 

 l egg re gen< rally deposited at the base of the ker 

 nel so that the larva or "grub" on hatching makes its entra 

 hole at the base of the kernel. This hole is usually filled with 

 so that it is not noticeable. The larva burrowing it- 

 way into the kernel lives <>n the starchy part of the grain and 

 after some time changes from the active, devouring "grub" int<» 

 the quiescent pupa <>r chrysalis. Just before this change the exit 

 hole is made at the opposite end of the kernel from the entram e 

 hole. This orifice is conspicuous and is the one referred to as 

 betraying infested grains. Soon after, the pupa changes into the 

 perfect moth which escapes by the hole prepared for it and 

 proceeds to the laying of another lot of e| 



< lertain other insect pesis attack stored -rain, and while the 

 attacks of all are similar and the remedies for all practically the 

 same, it will be of interest to the farmer to become acquainted 

 with the spec itl( forms. 



If the -rain is infested by tin- Grain Moth there will he 

 apparent upon examining a split-open kernel, (See Fig. 3, a. b, 

 C, d. e ' either one or more small, white, browndieaded worms 

 with nine pairs ol legs, or a brown, mummy-like pupa or chry- 

 salis with wing pads, long antennae or feelers and legs closely 

 pressed against the body. The two large black eyes are plainly 

 visible in the pupa. < )r. there may be found the perfect moth 

 with folded wings ready to emerge from the kernel. 



The accompanying figures with explanations will assist the 

 tanner and miller to recognize this pest in its various stages. 



kl Ml Ml s. 



Fortunately effective remedies are at hand for the attacks of 

 these stored grain pests. In [879 Dr. < '. V. Rile) called atten 

 tion to the use ol bisulphide of Carbon on a large scale as an 

 insecticide, ami this substance may be effectually used against 

 the (Irani Moth. Bisulphide of Carbon is sold at retail by 

 druggists tor about twenty five cents a pound, but it may be 

 bought for considerably less when got in larger quantities. It is 

 an extremely volatile liquid, and the insects are killed by its 

 vapor. It ; ire that it be so applied that the 



vapor ma) penetrate all through the bin of -rain. 



