Unknown q-rubra-ribbed-crown-gall

The inducer of this gall is unknown or undescribed.
Family: Cynipidae | Genus: Unknown
Detachable: detachable
Color: brown, white
Texture: hairless, ribbed
Abundance:
Shape: globular, cluster
Season: Fall
Related:
Alignment:
Walls:
Location: underground (roots+), stem
Form:
Cells: polythalamous
Possible Range:i
Common Name(s):
Synonymy:

American gallflies of the family Cynipidae producing subterranean galls on oak

WELD 405. Plate 37, fig. 32.

Host. — Quercus rubra Linnaeus and Quercus nigra Linnaeus.

Gall. — A polythalamous, somewhat globose, gall with a smooth brown surface, 15 mm. in diameter, attached at the crown and hidden under humus. When mature the epidermis disintegrates revealing a cluster of whitish, longitudinally ridged, relatively large woody cells.

Habitat. — Old galls were collected at Ironton, Missouri, on Quercus rubra October 5, 1917, and at Gainesville, Florida, October 23, 1919, on Quercus nigra.

- LH Weld: (1921) American gallflies of the family Cynipidae producing subterranean galls on oak©

Reference: https://www.biodiversitylibrary.org/page/7562993#page/296/mode/1up


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 q-rubra-ribbed-crown-gall on iNaturalist. You can view them here:
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