336 FRUIT INSECTS 



spring take an upward course, either through the pith or in the 

 wood just beneath the bark (Fig. 294). They become full- 

 grown (Fig. 295) in July and burrow out to the surface of the 

 cane but leave the epidermis intact over the opening. The 

 pupa is about f inch in length, of a reddish -]:)rown color, and has 

 the front end armed with a sharp-pointed process used in 

 breaking away the epidermis over the end of the burrow. 

 The pupal stage lasts 25 to 30 days. When about to transform 

 the pupa works itself part way out of the burrow, so that after 

 the moth has emerged the empty pupal skin is left protruding 



from the opening. The 

 moths usually emerge in 

 the afternoon and mating 

 takes place in the early 

 evening. 



This borer may be held 



Fig. 295. — Mature larva of the blackberry -^^ pj^g^^l^ ^y Systematically 

 crown-borer (X 2). t • j. xu i 



diggmg out the larvae 

 whenever a dying or wilting tip indicates its presence. All 

 wild berry bushes in the vicinity of berry fields should be 

 destroyed to prevent the breeding of the moths. 



References 



N. J. Agr. Exp. Sta. Spec. Bull. N., pp. 9-12. 1891. 

 Engel, Ent. News, XV, pp. 68-71. 1904. 

 Wash. Agr. Exp. Sta. Bull. 63. 1904. 



The Rose Scale 

 Aulacaspis (Diaspis) rosce Bouche 



The stems of roses, blackberry, raspberry and dewberry 

 growing in damp, shady places often become densely coated 

 with a snow-white, nearly circular scale-insect, the larger ones 

 about ^ of an inch in diameter, with the two light yellow 



