Grape berry moth

Paralobesia viteana

The adult is a mottled-brown-colored moth with some bluish-gray on the inner halves of the front wings.  The larvae of this small moth are active, greenish to purplish caterpillars about 3/8 inch long when fully grown.  Grape berry moths overwinter in cocoons within folded leaves in debris on the vineyard floor and within adjacent woodlots.  After emerging in the spring, the adults mate, and females lay eggs on or near flowers or berry clusters.  Newly hatched larvae feed upon the flowers and young fruit clusters.

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