Quercus-wislizeni

Guides

• Callirhytis serricornis

  kernel flower gall wasp

  Callirhytis serricornis is a cynipid gall wasp endemic to California that induces distinct bottle- or vase-shaped galls on oak trees. The species exhibits alternating generations with different gall phenotypes: first-generation galls are brown, while second-generation galls are red and green. It is restricted to two host oak species in the western United States.

  gall-waspCynipidaeCalifornia-endemicoak-gallheterogonyQuercus-agrifoliaQuercus-wislizeni