RASPBERRY, BLACKBERRY AND DEWBERRY INSECTS 323 



observed the latter part of June. Both adults and nymphs 

 puncture the leaves and tender canes with their piercing mouth 

 parts and feed on the juices of the plant, causing the leaves to 

 curl, also dwarfing and distorting the young canes. The 

 minute, young nymphs are whitish or greenish-white in color ; 

 the older nymphs are yellowish. They mature in early fall, 

 and the adults go into hibernation. 



Little experimental work has been done in the control of 

 this insect, but it is probable that some of the measures employed 

 against the pear psylla would be found satisfactory. 



I 



Reference 



N. Y. (Geneva) Agr. Exp. Sta. 14lh Kept, for 1895, pp. 619-r)23. 189G. 



The American Raspberry Beetle 

 Byturus unicolor Say 



The red raspberry crop is sometimes severely injured locally 

 in the eastern United States and Canada by this small, sUghtly 

 hairy, light brown beetle, about y inch in length. The beetles 

 appear in May and begin feeding on the buds and tender leaves, 

 and later attack the blossoms themselves. When the cluster 

 of blossom buds is disclosed, they work their way in between 

 them and eat holes into the l)uds. They also skeletonize the 

 leaves to a considerable extent and feed on the stamens and 

 pistils of the blossoms, often causing an almost total failure of 

 the crop. 



Although the egg is unknown, it is probably deposited on 

 the fruit, for the young grubs are found burrowing through the 

 receptacle or lying upon its surface beneath the berry. When 

 full-grown they are nearly white in color and about J inch in 

 length. When abundant many of the grubs adhere to the 

 berry at picking time, making it necessary to carefully hand- 

 pick the fruit intended for table use. Normally they fall to 



