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Unidentified Galls

Gall Host gall on oak Apparent White Oak - Quercus Goldenrod Gall, 3 more larvae Eriophyes emarginatae? St. Andrews stem galls on Quercus nigra SA_G47 2016 3 Hackberry galls St. Andrews leaf miner maybe on Pteridium latiusculum SA844 2017 1
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
No Taxon (Unidentified Tracks, Sign, and Other Mysteries)
No Taxon Unidentified Galls
Numbers
There are more than 2,000 gall-producing insects in the United States; 1,500 are either gall gnats or gall wasps.
Size
Agent producing the gall usually very small, less than 1 mm to a few millimeters. Galls can be as large as a couple of inches.
Food
Plant tissue of the host plant.
Remarks
This is the section where images of unidentified galls are kept, hopefully temporarily.
Gall insects (and mites) are usually highly specific about what kind of plants they use, and even what part of the plant. To maximize your chances of getting a gall identified, record the plant species (include photos of the leaves, flowers, fruits, etc. if you're not sure), and if it's a leaf gall, note the position on the leaf (if it's not obvious from the photo): upper side or underside; midrib, side vein, or somewhere else. Also note whether or not the gall is detachable, the size of the gall, and anything else distinctive about it that may not be clear in the photo. With oaks in particular, which are hosts for hundreds of kinds of galls, every little detail can help to narrow down the options.
Print References
(1), (2), (3), (4), (5), (6), (7), (8)
Internet References
Colo. State U.. Insect and Mite Galls.
Iowa State U.. Insect Galls on Trees and Shrubs.
U. of Florida. Insect Galls.
TAMU. Gall-making Insects and Mites.
Confessions of a Gall Hunter (article in Natural History by Ron Russo)
USDA. The Ecology and Evolution of Gall-forming Insects[/url]
Works Cited
1.Plant Galls and Gall Makers
Ephraim Porter Felt. 1940. Comstock Publishing Company, Inc., Ithaca NY.
2.Field Guide to Plant Galls of California and Other Western States
Ron Russo. 2006.
3.Galls and Gall Insects
Ross E. Hutchins. 1969. Dodd, Mead & Company.
4.The Plant-Feeding Gall Midges of North America
Raymond J. Gagné. 1989. Cornell University Press.
5.Cynipid Galls of the Pacific Slope
Lewis H. Weld. 1957. Privately printed in Ann Arbor, Michigan.
6.Cynipid Galls of the Eastern United States
Lewis H. Weld. 1959. Privately printed in Ann Arbor, Michigan.
7.Cynipid Galls of the Southwest
Lewis H. Weld. 1960. Privately printed in Ann Arbor, Michigan.
8.Tracks & Sign of Insects and Other Invertebrates
Charley Eiseman & Noah Charney. 2010. Stackpole Books.