Woolly-gall

Guides

• Druon quercuslanigerum

  Druon quercuslanigerum is a cynipid gall wasp that alternates between sexual and asexual generations on live oaks. The sexual generation forms small galls on catkins in spring, while the asexual generation produces distinctive woolly galls on leaf undersides. It is one of only two species in the genus Druon with documented alternating generations.

  cynipidaegall-waspoak-gallheterogonylive-oakwoolly-gallalternating-generationsnearcticmexicointroduced-species