208 FRUIT INSECTS 



The two-spotted mite {Tetranychus bimaculatus Harvey) 



This is the common '^red-spider" of greenhouses and the mite 

 often discussed as Tetranychus telarius. Under this latter 

 name there are many reports of injury to fruit-trees by ''red- 

 spiders," but in most cases it is evident that the real culprit 

 was the clover-mite. The two-spotted mite is smaller, about 

 ■^Q of an inch long, and the legs are more nearly of equal length. 

 The body and legs bear many stout hairs ; it varies in color 

 from yellow through orange to browTi and dark green, often 

 with a darker spot on each side of the body. It spins a very 

 delicate silken web-like nest over its breeding grounds. Its 

 eggs are elongate and white, and it is said to hibernate among 

 fallen leaves and not as eggs on the bark. Thus while these 

 two mites work in a similar manner on the foliage, they differ 

 considerably in appearance and Ufe-habits. (See also p. 315.) 



Remedial treatment for these mites. 



The clover-mite can be most effectively and easily con- 

 trolled by thoroughly spraying the hibernating eggs in fall, 

 winter or early spring with lime-sulfur at the strength usually 

 used against scale, or a 10 per cent kerosene emulsion. The 

 mites can be killed on the foliage with whale-oil soap solution 

 (1 pound in 10 gallons water) or by dusting with sulfur and 

 hydrated lime. 



References 



Vt. Agr. Exp. Sta. lOth Ann. Rept. pp. 75-86. 1897. 

 Col. Agr. Exp. Sta. Bull. 152. 1909. 



The Ring-legged Tree-bug 

 Brochymena annulata Fabricius 



This large, widely distributed, dull grayish-brown Pentato- 

 mid bug about f of an inch long often occurs in young apple 

 orchards and has been accused of killing the tender, young 



