36 



THE WALNUT — ENEMIES. 



YELLOW SPIDER OE MITE. 



Tetranychus. 

 Apply same treatment as for red spider. 



WALNUT SCALE. 



Aspidiotus Juglans regia, Coms. 



The walnut 'is subject to infection from this scale peculiar to itself, 

 and known as the walnut scale. The scale, however, has not proved a 

 pest among our walnut trees. The old trees do not suffer from its 

 attacks, as it infests the large limbs principally. 



Remedy (applied when trees are dormant in winter). — Lime, 25 

 pounds; sulphur, 20 pounds; salt, 15 pounds. Take 10 pounds of lime, 

 20 pounds of sulphur, and 20 gallons of water; boil until the sulphur is 

 thoroughly dissolved. Take the remaining 15 pounds of lime and 15 

 pounds of salt, and when thoroughly slacked, mix together and add 

 enough water to make in all 60 gallons of solution; strain and spray 

 warm. 



BEOAD-NECK BOEEE. 



Prionus lacticollis, Drury. 



This gigantic beetle appears during July and August, but at times 

 much earlier, and also late in winter. The beetle measures from li to 



Fig. 6. 



2 inches in length. Color dark brown, nearly black. Possesses strong, 

 thick jaws. In the male the antennae are rather slender; in the female 

 they are not so stout, and the body is much broader. The larva (Fig. 

 7) is a large borer with a broad neck. It measures from 2^ to 3 inches 

 in length. The color of the larva is yellowish white. The head is quite 

 small and is reddish brown. There is a light blue line down the back. 

 As a rule it mostly attacks trees and vines just below the surface. It 

 bores a hole through' the center of the root, or into the trunk. On the 

 trunk of trees and vines it never bores very deep, seemingly preferring 



