278 



INSECTS INJURIOUS TO STAPLE f'ROPS. 



The larvae are known as ''false loo^^ers/' on account of 

 their bendnig the back slightly in creeping, which is due 

 to their lacking the first pair of pro-legs. 



Another species of the same genus {Hypcna rostralis) 

 affects hop-vines in Europe in the same manner and is 

 very similar to the one above described. 



Fig. 160. — The Hop-vine Snout-moth {Hypena Jmmuli HarrJ. a, 

 egg; h, larva; c, segment of same; d, pupa; e, cremaster of 

 same; /, adult — a, c, e, greatly enlarged, others slightly en- 

 larged. (After Howard, U. S. Dept. Agr.) 



Remedies. — The larv« can be controlled by the use of 

 any arsenical spray, which should be applied while they 

 are still young. 



Hop-merchants. 



The so-called '* Hop-merchants^^ which here and there 

 gleam from the vines are the chrysalids of two common 

 butterflies, whose larvae feed preferably upon hops. The 

 chrysalids are normally marked with beautiful gold or 

 silver spots, which sometimes become so diffused as to 

 tinge the whole chrysalis. "An interesting superstition 

 holds among hop-growers to the effect that when the 



