
Appearance
The wingspan is 11–18 mm. Adults are on wing from April to October in the northern United States. In California, adults have been collected as early as February and as late as September, suggesting that there are multiple generations in the San Francisco Bay Area. There is one generation per year in the eastern part of the range.
Food
Larvae have been recorded on boxelder, silver maple, sugar maple and bigleaf maple, but probably also feed on other maple species. The larvae hollow out dormant buds and seeds in fall and continue to feed on dormant buds in spring. During the growing season, larvae bore in fresh shoots, often destroying them and preventing terminal growth. The larvae mix frass with webbing to form shelters around the entrances.References:
Some text fragments are auto parsed from Wikipedia.