Polystepha podagrae
The inducer of this gall is unknown or undescribed.
Family: Cecidomyiidae | Genus: Polystepha
Hosts: Quercus ilicifolia / Quercus velutina
Detachable: integral
Color: brown, purple
Texture: hairy, hairless
Abundance:
Shape: linear, spindle
Season: Fall
Related:
Alignment: integral
Walls:
Location: lower leaf, leaf midrib, on leaf veins, at leaf vein angles
Form: tapered swelling
Cells: monothalamous
Possible Range:i
Common Name(s):
Synonymy: 
On Quercus ilicifolia. Possibly altered by inquiline, or may be another species?
Image by Pete Woods © All Rights Reserved
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.
31st Report of the State Entomologist on Injurious and Other Insects of the State of New York
“
Cincticornia podagrae
This species was reared in small numbers in April 1908 from a narrow, fusiform vein swelling on the leaves of Quercus velutina in MA in October 1908.
Gall. This is a narrow, dark purplish, fusifom, thin-walled swelling some 8 mm long on the under side of the mid or lateral veins and may contain two or more orange larvae.
”- EP Felt: (1915) 31st Report of the State Entomologist on Injurious and Other Insects of the State of New York©
Reference: https://www.biodiversitylibrary.org/page/36619989#page/547/mode/1up
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