RASPBERRY, BLACKBERRY AND DEWBERRY INSECTS 331 



dry rot sets in at the girdled point and the whole shoot usually 

 dries up and dies. 



After checking the growth in May the maggot proceeds to 

 burrow downward in the pith, usually reaching the base near 

 the surface of the ground some time in June. In late June 

 and early July the maggots, without leaving their burrows, 

 transform to pupae 



within the hard- - 5^' 



ened dark brown 

 larval skin or pu- 

 parium. The 

 adult, however, 

 does not emerge 



till the following ^ i^S^. -B^S --*?m 



April, there being 

 but one brood a 

 year. 



Control. 



With a little 

 watchfulness this ^ , , .,,,,, 



I iG. 289. — Raspberry shoots girdled by the caue- 



raspberry pest can maggots. 



■be easily checked. 



Its presence can be quickly detected in May, as its work is then 

 very conspicuous. The remedy is simple. As soon as a droop- 

 ing tip is seen, either pull up the shoot or cut it off several 

 inches below the girdle and burn it. This method faithfully 

 carried out throughout May will quickly check the pest. 

 There is no possibh^ chance of getting at the insect with a 

 spray. Simply burn all infested shoots in May. 



References 



Cornell Agr. Exp. Sta. Bull. 126, pp. 54-60. 1897. 

 Wash. Agr. Exp. Sta. Bull. 62. 1904. 



