Trigonaspis quercusforticorne (agamic)

Family: Cynipidae | Genus: Trigonaspis
Detachable: detachable
Color: brown, red, yellow, tan
Texture: bumpy, hairy
Abdundance:
Shape: cluster
Season: Fall, Summer
Related:
Alignment:
Walls: thick
Location: petiole, upper leaf, lower leaf, leaf midrib, stem
Form:
Cells:
Possible Range:i
Common Name(s):
Synonymy:
Name
Notes
Biorrhiza forticornis
Xanthoteras forticorne
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  • image of Trigonaspis quercusforticorne (agamic)

Cynipid galls of the eastern United States

Xanthoteras forticorne agamic

Quercus alba, macrocarpa, prinoides, prinus [montana],
Stem galls, detachable
Oak Fig Gall. Dense cluster usually on sprouts from stumps, persisting over winter.

[Photo caption]
On Q alba. Oak Fig Gall. Also on Q prinus, prinoides. Adults emerged in Jan and Feb. See Fig. 51 [Xanthoteras radicola] for the alternating sexual generation at the base of stump on whose sprouts was this gall the fall before.

- LH Weld: (1959) Cynipid galls of the eastern United States©

Reference: https://www.biodiversitylibrary.org/item/273718#page/116/mode/1up


Further Information:

See Also:
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