Oak-parasite
Guides
Aceria mackiei
Live Oak Erineum Mite
Aceria mackiei, commonly known as the live oak erineum mite, is an abundant eriophyoid mite that induces distinctive leaf-blister galls on several species of live oak. This mite is notable for its unique ability to form galls on oaks belonging to both the black oak group and the intermediate oak group, a trait not shared by other eriophyoid mites. The species is widely distributed across western North America and was previously classified under the genus Eriophyes.
Andricus burnetti
Andricus burnetti is a species of gall wasp in the family Cynipidae, a group renowned for inducing diverse and structurally complex galls on oak trees. As a member of the genus Andricus, this species participates in the intricate life cycle characteristic of cynipid wasps, where females lay eggs in oak tissues and the developing larvae secrete substances that redirect plant growth to form specialized galls. The species was described by Burnett, for whom it is named. Like many Andricus species, it likely exhibits host specificity to particular oak species, though detailed biological accounts remain limited in published literature.