Polystepha q-phellos-purple-leaf-spot
The inducer of this gall is unknown or undescribed.
Family: Cecidomyiidae | Genus: Polystepha
Hosts: Quercus phellos
Detachable: integral
Color: red, purple
Texture: hairless
Abundance:
Shape:
Season: Spring
Related:
Alignment: integral
Walls: thin
Location: upper leaf, lower leaf, leaf midrib, between leaf veins
Form: leaf spot
Cells: monothalamous
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
“
Oval leaf spots on leaves of Quercus phellos, often but not exclusively clustering along the midrib, with a purple spot in the center and a distinct purple ring at the edge. Slightly swollen above and below the surface of the leaf. Observed in Arkansas in April and May.
”- 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-phellos-purple-leaf-spot on iNaturalist. You can view them here:
