GRAPE INSECTS 425 



prunings. In case the beetles appear in the vineyard in the 



spring and begin th(nr destructive work, the only recourse is 



to dig them out of the infested branches by hand or to capture 



them before they have entered the canes. 



On the Pacific slope this species is replaced by the closely 



related ^S. punctipennis Leconte, the larvae of which burrow in 



grape-canes. 



References 



Kansas Agr. Exp. Sta. Bull. 3, pp. 27-36. 1888. 

 Hubbard, Ent. Am. IV, p. 95. 1888. 

 Lesne, Ann. Soc. Ent. Fr. LXVII, pp. 513-517. 1898. 

 U. S. Dept. Agr. Farm. Bull. 70, pp. 11-13. 1898. 



The Grape-cane Gall-maker 

 Ampeloglypter sesostris Leconte 



From Missouri to Ohio and West Virginia grape-canes are 

 sometimes injured to a slight extent by the attacks of a reddish- 

 brown weevil, the larva of which feeding in the cane just above 

 one of the joints produces a swelling or gall from one to one and 

 one half inches in length and about twice the diameter of the 

 cane in thickness. The insect hibernates in the adult state 

 under leaves or other suitable shelter. The weevils emerge 

 from winter quarters in May and the female begins egg-laying 

 as soon as the vines have made sufficient gro\vth. 



For oviposition she usually selects a place directly above the 

 lowest joint which does not bear a fruit cluster. She first 

 bores a hole with her snout in the heart of the cane, deposits 

 an egg in it and then fills the cavity with bits of bark fiber 

 scraped from the surface of the cane. She then makes a row 

 of eight to fourteen similar punctures directly above the first 

 and fills them with fiber, but does not deposit an egg in any 

 except the first. As the gall increases in size this row of punc- 

 tures produces an ugly wound which does not heal as long as 

 the gall is inhabited. 



