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Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

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Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

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Species Tetraneura ulmi - Elm Sack Gall Aphid

galls - Tetraneura ulmi
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hemiptera (True Bugs, Cicadas, Hoppers, Aphids and Allies)
Suborder Sternorrhyncha (Plant-parasitic Hemipterans)
Superfamily Aphidoidea
Family Aphididae (Aphids)
Subfamily Eriosomatinae (Woolly Aphids and Gall-making Aphids)
Tribe Eriosomatini
Genus Tetraneura
Species ulmi (Elm Sack Gall Aphid)
Synonyms and other taxonomic changes
Aphis ulmi Linnaeus, 1758
Explanation of Names
ulmi is Latin for "of elm"
Food
Makes galls on elm
Remarks
European species. Introduced around 1890.
See Also
Colopha ulmicola, which is incorrectly referred to in some older sources as Tetraneura ulmi, leading to confusion with this species.
Internet References
Forestry Images: photos of galls and damage.
Encyclopedia of Life: images of galls, inside and out.
Biolib: some images of galls.
Annual report of the Maine Agricultural Experiment Station, 1910, p.216 (bulletin 181)    Gall Aphids of the Elm. "Tetraneura ulmisacculi" seems to be this species