Cynips q-kelloggii-acorn-cup-gall-wasp
The inducer of this gall is unknown or undescribed.
Hosts: Quercus agrifolia / Quercus kelloggii
Detachable: integral
Color: brown, green
Texture: hairy
Abundance: occasional
Shape:
Season: Summer
Related:
Alignment: integral
Walls:
Location: fruit
Form: abrupt swelling
Cells: monothalamous
Possible Range:i
Common Name(s): Acorn Cup Gall Wasp Unknown #1
Synonymy: 
Our ID Notes may contain important tips necessary for distinguishing this gall from similar galls and/or important information about the taxonomic status of this gall inducer.
Gallformers ID Notes
“
Acorn Cup Gall Wasp
This cynipid wasp induces bulging, round galls on the cups of acorns on Quercus kelloggii.
Photographs and drawings of this undescribed gall are currently available in both the 2006 and 2021 versions of Ronald Russo's field guides, however additional verifiable images are not currently available.
Russo mentions that this gall has only been observed on California black oak (Quercus kelloggii) in Mount Shasta, CA, however may be possible on other oaks within this group.
Quercus agrifolia added tentatively as a host based on this unconfirmed observation.
”- Gallformers Contributors: (2024) Gallformers ID Notes©
Further Information:
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See Also:
Unless noted otherwise in the ID Notes, observations of this gall are collected in the Observation Field Gallformers Code with value q-kelloggii-acorn-cup-gall-wasp on iNaturalist. You can view them here:
