CORN INSECTS 119 



the late summer or early fall in the ground; the 

 eggs remain here until the following April, May, 

 and June, when they hatch into the young wingless 

 grasshoppers; the young insects require 70 to 90 

 days to attain their growth; there is usually but one 

 generation a year. 



Control — Destroy eggs by thoroughly disking 

 or plowing the soil in which the eggs are deposited; 

 catch the young grasshoppers in hopperdozers; 

 poison them by scattering broadcast the Kansas 

 poison bait. 



OTHER INSECTS INJURIOUS TO WHEAT 



Spring grain-aphid (Toxopfcra graminiim). 

 Wheat sawfly borer (Cephns pygmceus). 

 Wheat sawfly {Pachynematus extensicornis) . 

 Wheat-louse {Nectarophora avence). 

 Leather-jackets (Tipulidce sps.). 



CORN PESTS 



WiREw^QRMS (several species) 



These have been fully discussed under wheat 

 pests. They are quite as injurious to corn as to 

 wheat. In fact, they constitute one of the chief 

 pests of corn in New York State. 



The army worm (Heliophila unipuncta) 



The army worm is injurious to wheat, corn, oats, 

 and many other grains. There are occasional out- 

 breaks of this insect in New York, which are often 

 very serious. The season of 19 14 witnessed some 

 serious injuries by this insect. It has been dis- 

 cussed under wheat pests. 



