Venom-glands
Guides
Cynipidae
Gall Wasps, Gallflies
Cynipidae is a family of minute wasps (1–8 mm) renowned for inducing plant galls—abnormal growths that provide shelter and nutrition for developing larvae. The family comprises approximately 1,300 described species worldwide, with major radiations on oaks (Quercus) and roses (Rosa). Many species exhibit complex life cycles involving alternation of sexual and asexual (parthenogenetic) generations, often producing morphologically distinct galls. Gall induction involves chemical manipulation of host plant tissue, with enlarged venom glands implicated in this process. The family evolved from parasitoid ancestors and represents one of the most diverse groups of gall-forming insects.