Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Upcoming Events

Discussion of 2018 gathering

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa

Photos from the 2010 Workshop in Grinnell, Iowa

Photos from the 2009 gathering in Washington


Species Eurosta solidaginis - Goldenrod Gall Fly

Goldenrod Gall - Eurosta solidaginis From goldenrod round galls - Eurosta solidaginis Goldenrod Gall Fly - Eurosta solidaginis Nest? - Eurosta solidaginis Goldenrod gall, moth? - Eurosta solidaginis Eurosta solidaginis? - Eurosta solidaginis Dead flowers of the plant I found the galls on - Eurosta solidaginis Eurosta solidaginis - female
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon ("Acalyptratae")
Superfamily Tephritoidea
Family Tephritidae (Fruit Flies)
Subfamily Tephritinae
Tribe Dithrycini
Genus Eurosta
Species solidaginis (Goldenrod Gall Fly)
Other Common Names
Goldenrod Spherical Gall Fly, Tephritid Fly
Explanation of Names
Eurosta solidaginis (Fitch 1855)
Specific epithet refers to the host plant, Solidago (Goldenrod)
2 subspecies: one eastern (nominate) and one western (E. s. fascipennis)(1)
7-9 mm
Galls distinctive
Much of North America, from Northwest Territory south to British Columbia, Kansas, Carolinas.
Life Cycle
Larvae form round galls on the stem of certain Solidago spp., feed there, and pupate in early spring; adults emerge in April-May(2)
Some parasitoids listed at(3)
See Also
Goldenrod Elliptical-Gall Moth: similar gall, same host:
Works Cited
1.Handbook of the Fruit Flies (Diptera: Tephritidae) of America North of Mexico
Richard H. Foote, P. L. Blanc, Allen L. Norrbom. 1993. Cornell University Press (Comstock Publishing).
2.Guide to Observing Insect Lives
Donald W. Stokes. 1983. Little, Brown, and Company.
3.From goldenrod round galls