GENERAL CROP PESTS 73 



grows. Here the eggs can be destroyed by burning over the 

 ground late in the fall after all of the eggs are deposited, or 

 by plowing them in to a depth of six or eight inches before 

 they hatch in the spring. 



In case it is for any reason not feasible to employ any of 

 these last mentioned remedies, and the place of egg deposit is 

 ascertained, a watch should be kept for the young grasshoppers, 

 and they should be destroyed as soon as possible after hatching 

 by means of bran-arsenic mash. 



Cooperation is greatly desirable in the treatment of grass- 

 hoppers, particularly in regions where they reach their greatest 

 development ; and the thoroughness with which work is done 

 in one year will show the next season in the greatly reduced 

 numbers with which the farmers will have to deal. 



Remedies for grasshoppers in general are applicable to the 

 migratory species, but the latter sometimes occur in such im- 

 mense swarms that it is difficult to treat them. It is of the 

 highest importance that whatever remedies are employed must 

 be used at the very first onset and generally over considerable 

 territory, as the insects fly from one field to another. 



WHITE GRUBS 



White grubs occupy a prominent position among the many 

 insect foes to agriculture. There are several hundred distinct 

 forms of these creatures, each representing a different species 

 of the family Scarabaeidse. A considerable number are of prime 

 importance economically, the remainder are less injurious or 

 do not attack useful plants. The noxious forms subsist on 

 roots and are very abundant under sod, and in similar locations. 

 Of these a considerable majority of the typical white grubs 

 belong to the genus Lachnosterna, of which nearly a hundred 

 species are known. 



The parents of white grubs are known as May beetles or 

 "May bugs" in the South and Middle states, and as June beetles 



