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Extension > Garden > Diagnose a problem > What insect is this? > Garden Pests > Beetles, bugs, ants, and other insects without obvious wings - Under 1/4 inch long > Grape flea beetle

Grape flea beetle
Photo Credit: Eric Burkness, Univ. of MN

Grape flea beetle
Altica chalybea
Size: 1/5 inch long

Where/When: Feeds on buds of wild and cultivated grapevines and Virginia creepers (the larvae feed on leaves). Active from late April to early June and late July through August.

Significance: Tunnels into buds in spring, damaging them. They are generally not common and damage is typically not important, although they can become numerous in localized areas, causing significant damage and reducing yield. Leaf feeding in late summer is not important.
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