Hormomyia canadensis

Cecidomyiidae

Blaesodiplosis

Amelanchier canadensis

Alabama

Connecticut

Delaware

Georgia

Maine

Maryland

Massachusetts

Mississippi

New Hampshire

New Jersey

New York

North Carolina

Pennsylvania

Rhode Island

South Carolina

Tennessee

Virginia

West Virginia

Blaesodiplosis canadensis

Hormomyia canadensis n. sp.
Bred from truncate leaf gall
Host: Amelanchier

23rd report of the State Entomologist on injurious and other insects of the State of New York. Appendix D. 

[Moved from Hormomyia to the newly created genus Blaesodiplosis]

A generic synopsis of the Nearctic Cecidomyiidi (Diptera: Cecidomyiidae: Cecidomyiinae).

Blaesodiplosis canadensis. USA (New York, Maine, Massachusetts). Amelanchier canadensis (Rosaceae). 
Hormomyia canadensis Felt 1908b: 388. USA: Massachusetts, Magnolia; ST; ♂,♀; NYSM

A Catalog of the Cecidomyiidae (Diptera) of the World

Nearly all observations on iNaturalist of this species are fuzzy galls in the Pacific Northwest. To our knowledge, no sources in the literature indicate this species is fuzzy, and its reported range (see Gagne 2017) is limited to the northeast US. Further study may reveal that these are in fact the same species, but it may also indicate multiple species with distinct morphologies in the two regions. 

Gallformers ID Notes