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Species Eurosta solidaginis - Goldenrod Gall Fly

Space Alien - Goldenrod Gall Fly emergence - Eurosta solidaginis - female Goldenrod spherical gall - Eurosta solidaginis Goldenrod spherical gall - Eurosta solidaginis Something wilted - Eurosta solidaginis Goldenrod Gall Fly ? - Eurosta solidaginis Bronze coloured gall - Eurosta solidaginis Galls - Eurosta solidaginis Galls - Eurosta solidaginis
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