A Guide to Grapevine Abnormalities in South Africa - P.G. GOUSSARD

Boll-worm.

PHOTO 358. Damage that may be caused by boll-worm larvae in berries (before véraison). Not to be confused with the feeding pattern of snout beetles.

PHOTO 359. Boll-worm feeding patterns, in the shape of conspicuous holes that sometimes penetrate right through young berries, are shown here.

230 • A Guide to Grapevine Abnormalities in South Africa