Euura s-sitchensis-apple-gall

The inducer of this gall is unknown or undescribed.
Family: Tenthredinidae | Genus: Euura
Detachable: integral
Color:
Texture: hairless
Abundance:
Shape: globular
Season:
Related:
Alignment:
Walls: thick
Location: upper leaf, lower leaf, between leaf veins
Form:
Cells:
Possible Range:i
Common Name(s):
Synonymy:

Biosystematics and morphology of Symphyta. II. Biology of gall-making nematine sawflies in the California region

The Pontania on S. sitchensis Sanson ranges throughout the Sierras and Cascades, and resembles Type VI except for a lack of stomata (Fig. 5 B) [see page 6 of the pdf for figure].

- Edward L Smith: (1970) Biosystematics and morphology of Symphyta. II. Biology of gall-making nematine sawflies in the California region©


Further Information:

See Also:
Unless noted otherwise in the ID Notes, observations of this gall are collected in the Observation Field Gallformers Code with value s-sitchensis-apple-gall on iNaturalist. You can view them here:
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