EXPERIMENT STATION BULLETINS. 



343 



Fig. 67. — Strawberry Root-borer, adult and larva, enlarged. Author's illustration. 



EEMEDIES. 



Whenever the adult beetles are present, and the plants are not in bloom, no 

 sets or fruits being present, they may be destroyed by a spray of paris-green, 

 applied at the rate of three or four ounces to forty gallons of water or bordeaux. 

 When the fruit is set, but small, hellebore may be used. 



The writer has not had an opportunity to use commercial fertilizers, but they 

 should prove useful, as should wood-ashes when used in sufficient quantity. 

 Never set a new field near an infested field, nor re-set a piece of land inside of 

 several years after an infestation. 



June-beetles. (Lachnosterna spp.) 



June-bugs, May-beetles, dor-bugs, etc., etc., are familiar to all of us; large- 

 brown or yellowish beetles that are strongly attracted to light, and which often 

 fly about the rooms on summer nights, bumping their heads against the lights, 

 and creating disturbances. They go by various names, but create as much trouble- 

 under one name as under another. They feed, in the adult stage, on various 

 trees and shrubs. 



The egg is said to be laid in grass land in early June. The grubs being the- 

 common white grubs which feed on all sorts of vegetation. When numerous- 

 enough, these creatures sometimes devour the roots of grass so completely that 

 the sod may be rolled up like a carpet. They also work sad havoc among a variety^ 

 of plants and trees, notably on strawberries. They require two years to develop, 

 the pupal stage being passed in cells in the ground. 



Many parasites prey on these beetles, and several diseases attack them. The 

 writer has seen, what is probably a bacterial disease working among them and" 

 carrying them off by the million. It attacks the region near the bases of the 



