Asphondylia ovata (summer generation)
The inducer of this gall is unknown or undescribed.
Family: Cecidomyiidae | Genus: Asphondylia
Hosts: Bidens frondosa
Detachable: integral
Color: green
Texture:
Abundance:
Shape: globular
Season: Summer
Alignment:
Walls:
Location: stem
Form:
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.
The Gall Midges (Diptera: Cecidomyiidae: Cecidomyiinae) From Allegheny County Pennsylvania
“
Asphondylia ovata is a bivoltine species which produces an egg-shaped stem swelling along the main stem and upper branchlets of Bidens frondosa (Linnaeus). One larva develops per gall. Females from these galls oviposit at the base of the plant and neonate larvae overwinter at that site, where the spring crown gall is formed.
”- JD Plakidas: (2016) The Gall Midges (Diptera: Cecidomyiidae: Cecidomyiinae) From Allegheny County Pennsylvania©
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