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| Gallmakers
on leaves Rufus Isaacs, MSU Entomology |
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| Home > Scouting guide> gallmakers | ||||
| Galls are formed by larvae of small cecidomyiid flies, which lay their eggs into the leaf. Infestations are generally spotty, both within vineyards and within infested vines, and they rarely cause significant economic damage. There may be one to three generations per year. The life cycle begins with eggs laid within the unfolding buds or shoot tips. Orange, maggotlike larvae hatch from these eggs and enter the vine tissue. As the larvae feed, galls form around them. | ||||
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Additional information
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in collaboration with MSU Extension and the Michigan Agricultural Experiment Station.
Updated 12/20/07 Contact: J.N. Landis.