EXPERIMENT STATION BULLETINS. 



193 



to breed in the dried peas after they are gathered, as do those of the 

 bean, but work singly in the seed while the pea is yet green. The 

 eggs are pushed through inside the pod by the mother beetle. For this 

 reason it is possible to control the pest by saving the seed over for two 

 years, providing, of course, against the 

 escape of the adult beetles when they 

 come out of the seed. Under these con- 

 ditions, all the beetles come out dur- 

 ing the first summer, hence the seed 

 will be free by the following summer. 

 Such a course has its disadvantages 

 because of the deterioration in the 

 seed and usually it is found better to 

 fumigate buggy seed with carbon bi- 

 sulphide during a warm spell. Always 

 select a warm time for this work as 

 the beetles are more active and there- 

 fore more susceptible to the gas. 



Fig. 42.-Pea-weevil, enlarged, and pea, show- 

 ing work of beetle. (After Riley, Third 

 Mo. Rep.) 



INSECTS AFFECTING THE POTATO. 



INSECTS AFFECTING THE TUBERS. 



Fig. 43. — Mole-crickets. (Original ) 



Mole Cricket (Gryllotalpa borealis). 



The northern location of our State is responsible for our escaping 

 many of the bad pests of warmer regions. Many insects that are first 



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