20 
INSECTS AND INSECTICIDES. 
ily distinguished by its covering itself with its own excre¬ 
ment. The beetle is difficult to take, as it flies quickly in 
the hot sun. 
Two undetermined species of Erythroneura work on 
the foliage of the apple and grape throughout the grow¬ 
ing season. 
The species on the grape affects the smooth leaved 
varieties most. As the insect hibernates in the perfect 
state, clean culture by burning all decaying vegetation in 
the fall will aid much in their suppression. As a remedy 
we have used the kerosene emulsion with success, apply¬ 
ing it early in the day, when the insects are sluggish. 
