Quercus-douglasii
Guides
Andricus pedicellatus
hair stalk gall wasp
Andricus pedicellatus, commonly known as the hair stalk gall wasp, is a cynipid wasp that induces distinctive long, spindly leaf galls on blue oaks (Quercus douglasii). The species is fairly common along the Pacific coast of North America. Like other members of the genus Andricus, it exhibits high host specificity, attacking only one or a few closely related oak species.
Burnettweldia corallina
Coral Gall Wasp
Burnettweldia corallina is a cynipid gall wasp that induces distinctive detachable galls on blue oaks (Quercus douglasii) in California. The species was formerly classified under the genera Disholcaspis and Holcaspis before its current placement in Burnettweldia. The wasp oviposits at the base of leaf petioles, and the resulting galls change color dramatically as they mature.
Feron atrimentum
Striped Volcano Gall Wasp
Feron atrimentum is a cynipid gall wasp that induces distinctive galls on blue oak (Quercus douglasii) leaves. The species exhibits cyclical parthenogenesis with alternating sexual and parthenogenic generations, each producing morphologically distinct gall types. The common name refers to the volcano-shaped galls with red stripes produced by the parthenogenic generation.