Grape cane gallmaker

The grape cane gallmaker is a small, brown snout beetle, about 1/8 inch long and closely related to the grape cane girdler. Adult beetles overwinter in wooded and brushy areas close to vineyards. During May the beetles emerge from their hibernation quarters. The female gallmaker chews a row of holes along the length of a shoot, just above a node. She places an egg in the hole closest to the node. A reddish swelling, or gall, develops in the shoot, and the larva feeds within the shoot area that is affected. The swelling is usually about 3/4-1 inch long.