218 



INSECTS INFESTING THE CURRANT. 



Fig. 204. 



a short distance below it and forms a cell in which to undergo 

 its transformations. It remains in its cell unchanged through- 

 out the "Winter, and is changed to a pupa in the following 

 Spring, the beetle issuing in April. 



Fig. 204. — American Currant-borer, en- 

 larged — colors, brownish and white. 



This beetle (Fig. 204) is a little over two 

 lines long, and is of a black color, with 

 the margins of the tliorax and wing-covers | 

 pale brown. Near the middle of each wing- " 

 cover is a crescent-shaped white spot, and 

 a short distance toward the base of the wing- 

 cover from this are two yellowish or ash- 

 gray spots. — Fitch. 



Remedies. — Use Nos. 60 and 6(1 



CHAPTER CXXXIV 



The Currant Mite. 



( Tyroglyphvs W6fs. — Fitch.) 



Class, Akachnida ; Family, Acarid.i:. 



[Living in the burrows of the currant-borers ; minute eight 

 legged mites of a white color, and measuring scarcely one 

 hundredth of an inch in length.] 



In specimens of currant stocks infested b}- borers sent me 

 by Mr. W. H. Jessup, of Haywards, in September, 1880, he 

 called my attention to nests of eggs in the debris left by the 

 borer from which hatched mites. These are not true insects, 

 but belong to the same class as the spiders, and are character- 

 ized b)' having in the adult state four pair of legs, whereas no 

 insect in the perfect state has more than three pairs. They 

 belong to the same family as the itch-mites — minute creatures 

 which live beneath the skin of man, producing that loathsome 

 disease commonly known as the itch. 



The habits and economv of the currant mite have never 



