Unknown a-californica-stem-swelling
The inducer of this gall is unknown or undescribed.
Hosts: Artemisia californica
Detachable: integral
Color: brown, gray, tan
Texture:
Abundance:
Shape: globular
Season:
Related:
Alignment: integral
Walls:
Location: stem
Form:
Cells:
Possible Range:i
Common Name(s):
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
“
An unknown stem swelling on Artemisia californica (California Sagebrush). The gall resembles the Mordellid stem swelling recently discovered on Artemisia vulgaris in the northeastern US, but differs in its tendency not to be found at nodes, its spongy texture as if extruding between straps of epidermal tissue, and its more irregular size and shape. Cross sections reveal thick walls and an indeterminate insect larva present within. Observed primarily in Los Angeles; one observation in San Jose may be distinct.
”- Gallformers Contributors: (2024) Gallformers ID Notes©
Further Information:
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Unless noted otherwise in the ID Notes, observations of this gall are collected in the Observation Field Gallformers Code with value a-californica-stem-swelling on iNaturalist. You can view them here:
