132 



THE HOP. 



en or silvery tinge to the chrysalids. As I have 

 shown in another pubhcation, an interesting su- 

 perstition is more or less laughingly held among 

 New York hop growers, to the effect that w^hen the 

 golden spots are plentiful, the crop will be good and 

 the price high, while, if the silvery cocoons are more 

 abundant, the price will be low. Both of these insects 

 are double-brooded in hop-growing regions, and they 

 are shown in their different stages in the accom- 



\ A^^ 



FIG. 65. INTERROGATION BUTTERFLY. 



(7, En;gs; 6, larva; c, chrysalis; c/, adult. All natural size except a, which Is en- 

 larged. (Author's illustration.) 



panying figures. The spiny caterpillars are readily 

 recognized, and feed without concealment upon the 

 upper or under surface of the leaf. They are frequently 

 extensively parasitized in the caterpillar stage, as well 

 as in the e^^ stage, by minute hymenopterous para- 

 sites, a fact which accounts in large measure for the 

 slight damage done by these insects under ordinary 

 circumstances. 



