PESTS OF THE II 01' CUOP 



143 



"Spraying should 1)p commoncpd as soon as the lice make 

 their appearaiico and should lu» continuod as often as neces- 

 sary, until the hops begin to burr, after which the spraying 

 will do but little good, as the lice get inside the hop, where 

 the spray cannot touch them. The number of times it is 



Fia. 73. NEEDLE-NOSED HOP BUG (Calocoris fulvomacitlafus). 



b, Proboscis, greatly enlarged. 



necessary to spray a hop yard depends upon the location, 

 the density of the foliage of the vines and the weather dur- 

 ing the months of .June and July, as hop lice breed and in- 

 crease very rapidly in damp, rainy weather and very slowly 

 in hot, dry weather." 



