Phylloteras nigrum

Family: Cynipidae | Genus: Phylloteras
Detachable: detachable
Color: white
Texture: glaucous, hairless
Shape: globular
Season: Fall
Alignment: erect
Walls: thick
Location: lower leaf, between leaf veins
Cells: monothalamous
Possible Range:i
Common Name(s):
Biarhiza nigra
Biorhiza nigra
Biorrhiza nigra
Xystoteras nigrum
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  • image of Phylloteras nigrum

Cynipid galls of the eastern United States

Xystoteras nigrum

Quercus alba
Leaf galls, detachable
Depressed sphere, 3.5 by 1.8 mm on under side of leaf, with a white bloom. Sept. VA.

[Photo caption]
On Q alba. From galls collected in Sept. adults were found in breeding cage Feb 15 the second spring which agree with the types.

A depressed sphere 3.5 by 1.8 mm on under side of leaf of Q alba in VA in Sept; covered with a white bloom (as det. Weld).

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


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