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Species Druon quercuslanigerum - Wool-bearing Gall Wasp

Gall on oak tree ? - Druon quercuslanigerum Gall 1 - Druon quercuslanigerum Gall wasp 1 - Druon quercuslanigerum Gall wasp 1 - Druon quercuslanigerum tan/beige fuzzy spheres - Druon quercuslanigerum Andricus quercuslanigera - Druon quercuslanigerum Some kind of oak gall? - Druon quercuslanigerum Gall on Quercus virginiana - Druon quercuslanigerum
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hymenoptera (Ants, Bees, Wasps and Sawflies)
No Taxon ("Parasitica" - Parasitoid Wasps)
Superfamily Cynipoidea
Family Cynipidae (Gall Wasps)
Tribe Cynipini (Oak Gall Wasps)
Genus Druon
Species quercuslanigerum (Wool-bearing Gall Wasp)
Synonyms and other taxonomic changes
Cynips quercuslanigera Ashmead, 1881
Andricus laniger (1)
Andricus lanigerus (2)
Range
Georgia, Florida, Alabama, Mississippi, Louisiana, Texas (3)

It's also adventive to California, on non-native Quercus virginiana.
Life Cycle
Adults emerge Feb. 28-March 10 (1)

Click on this image to view a Life Cycle series:

Remarks
Forms galls on live oak leaves (Quercus virginiana and Q. geminata). "Hemispherical or irregular tufts 1/2 inch long of rather long, whitish or reddish wool covering, 2 to 6 irregular brown, seed-like kernels on under side of midrib, diameter 1/12 inch, on live oak, summer." (2)
Works Cited
1.Cynipid Galls of the Eastern United States
Lewis H. Weld. 1959. Privately printed in Ann Arbor, Michigan.
2.Plant Galls and Gall Makers
Ephraim Porter Felt. 1940. Comstock Publishing Company, Inc., Ithaca NY.
3.Catalog of Hymenoptera in America North of Mexico
Karl V. Krombein, Paul D. Hurd, Jr., David R. Smith, and B. D. Burks. 1979. Smithsonian Institution Press.