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Species Andricus ignotus

cottony leaf gall on bur oak - Andricus ignotus cottony leaf gall on bur oak - Andricus ignotus Andricus ignotus Andricus ignotus - female Andricus ignotus? - Andricus ignotus Andricus ignotus? - Andricus ignotus Andricus ignotus? - Andricus ignotus Andricus ignotus? - Andricus ignotus
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 Andricus
Species ignotus (Andricus ignotus)
Synonyms and other taxonomic changes
Cynips ignota Bassett, 1881
Dryophanta ignota
Range
MA, CT, IL, MN (1)
Life Cycle
Adults emerge in March or April and oviposit in buds (2).
Remarks
Like a few other Andricus species, forms galls on the undersides of veins of leaves in the white oak group, composed of seedlike cells in groups, covered by wool. Felt (3) describes the galls as "oval, rather thick-shelled, brown leaf vein gall, at first woolly, later naked, length 1/8 inch, diameter 1/16 inch, on swamp white oak [Quercus bicolor]." Krombein et al. (1) also list bur oak (Quercus macrocarpa) as a host. Weld (2) clarifies that the galls drop with the leaves in the fall and the wool weathers away during the winter.
Print References
Original description of gall: Bassett, 1881. Canad. Ent. 13: 106. 9
Works Cited
1.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.
2.Cynipid Galls of the Eastern United States
Lewis H. Weld. 1959. Privately printed in Ann Arbor, Michigan.
3.Plant Galls and Gall Makers
Ephraim Porter Felt. 1940. Comstock Publishing Company, Inc., Ithaca NY.