Cynipid Wasp

(Cynipidae) - Adults emerge from galls of the “asexual generation” during December. All adults are female and do not mate before laying eggs on swollen leaf buds. Eggs hatch in early spring as leaf buds begin to open. Larvae develop quickly in leaf tissue and stimulate the development of small, beige-colored galls resembling kernels of wheat. Adults of both sexes emerge from these galls or the “sexual generation” after a few weeks. After mating, females lay eggs in post oak twigs and branches. These eggs remain dormant for 3 to 5 months. Then they hatch and stimulate the formation of galls of the asexual generation.

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