Our ID Notes may contain important tips necessary for distinguishing this gall from similar galls and/or important information about the taxonomic status of this gall inducer.
The plant-feeding gall midges of North America
“
Contarinia [Chamaediplosis].
The damage is probably similar to that of Contarinia rugosa, but adult specimens are distinctly differ.
Unless noted otherwise in the ID Notes, observations of this gall are collected in the Observation Field Gallformers Code with value h-macrocarpa-tiny-cup-gall on iNaturalist. You can view them here: