A Guide to Grapevine Abnormalities in South Africa - P.G. GOUSSARD
Boll-worm moth (356); boll-worm larva (357).
PHOTO 356. An adult boll-worm moth.
PHOTO 357. In this example a flower cluster during the flowering period is appetising to a fully grown boll-worm larva. Note the characteristic pale coloured stripe along the sides.
A Guide to Grapevine Abnormalities in South Africa • 229
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