Unknown v-gigantea-abrupt-seedhead-gall
The inducer of this gall is unknown or undescribed.
Family: Cecidomyiidae | Genus: Unknown
Hosts: Vernonia gigantea / Vernonia missurica
Detachable: detachable
Color: brown, gray, green, black, purple
Texture: leafy
Abundance: frequent
Shape: globular, rosette
Season: Fall
Related:
Alignment:
Walls: thick
Location: flower
Form: abrupt swelling
Cells: polythalamous
Possible Range:i
Common Name(s):
Synonymy: 
Image by Yann Kemper © Public Domain / CC0
Image by Yann Kemper © Public Domain / CC0
Image by Yann Kemper © Public Domain / CC0Our 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
“
Galls comprise visibly swollen seedheads with deformed and clustered flowers. Internally, they are thick-walled, with 2-4 larval chambers each containing a small larva. The larval chambers are usually found inside the bracts. They possibly overwinter within the galls as they were found particularly late in season for most flower galls. The galls appear to be widespread in the Cincinnati, Ohio area in early October, and have been observed several times in the city.
”- 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 v-gigantea-abrupt-seedhead-gall on iNaturalist. You can view them here:
