Cynips multipunctata
Gray Midrib Gall Wasp
Cynips multipunctata is a cynipid gall wasp that induces galls on oak trees, primarily blue oak (Quercus douglasii), in western North America. The was formerly classified under the Besbicus. It is most commonly encountered in California, where it produces distinctive detachable galls on leaf midribs. The galls are solid except for a central larval chamber.
Pronunciation
How to pronounce Cynips multipunctata: /ˈsɪnɪps ˌmʌltɪˈpʌŋkteɪtə/
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Identification
The galls of Cynips multipunctata are solid, detachable structures attached to the midrib on the underside of oak leaves. They contain a single large central larval chamber. The specific epithet 'multipunctata' (many-spotted) may refer to markings on the or gall surface, though this requires verification. Distinguishing the adult wasp from other cynipids requires examination.
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Habitat
Associated with oak woodlands, particularly those dominated by blue oak (Quercus douglasii). The oviposits specifically on leaf midribs of oaks.
Distribution
Western North America, primarily California. Range extends along the west coast, with highest observation in California oak savanna and woodland .
Host Associations
- Quercus douglasii - gall inducerPrimary ; galls form on leaf midribs
- Quercus - gall inducer-level association with oaks
Life Cycle
Induces galls on oak leaf midribs. Larval development occurs within the solid gall tissue, in a central chamber. timing is not well documented in available sources.
Behavior
Females oviposit on the underside of oak leaf midribs, inducing gall formation. The resulting galls are detachable from the leaf.
Ecological Role
As a gall inducer, creates microhabitats that may be used by other organisms. The solid, detachable galls represent a distinct structural form among oak galls.
Human Relevance
No significant economic or medical importance. Occasionally encountered by naturalists and entomologists studying oak gall .
Similar Taxa
- Other Cynips speciesMultiple cynipid induce galls on oaks; identification to requires examination of gall and location, plus wasp characteristics
- Other cynipid gall wasps on QuercusNumerous induce galls on California oaks; C. multipunctata is distinguished by midrib location and solid, detachable gall structure
More Details
Taxonomic History
The has undergone generic reclassification, formerly placed in Besbicus as B. multipunctatus. Current places it in Cynips, though some sources may still use the former combination.