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Species Callirhytis furva

Gall? - Callirhytis furva red oak gall - Callirhytis furva Fuzzy red oak galls 2 - Callirhytis furva Fuzzy red oak galls 2 - Callirhytis furva Callirhytis furva? - Callirhytis furva cynipid wasp galls - Callirhytis furva fuzzy gall  - Callirhytis furva Callirhytis furva
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 Callirhytis
Species furva (Callirhytis furva)
Explanation of Names
Author: Weld, 1952
Life Cycle
Galls drop from leaves in October; adults emerge in the second or third spring in late March. (1)
Remarks
Forms galls on leaves of Quercus nigra and Q. paiustris (2); "probably on all the red oaks" (1): "Small cluster of globular galls, 3-4 mm, each covered with short, straight brown hairs, upper side, fall" (1).

Note from Charley Eiseman, 12/6/2009: The images in this section are not identified with 100% certainty, but this species is the closest match I have found for them. See comments under this image for more information.
Works Cited
1.Cynipid Galls of the Eastern United States
Lewis H. Weld. 1959. Privately printed in Ann Arbor, Michigan.
2.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.