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.
Gallformers ID Notes
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A substantial swelling of the leaf bud of Prunus virginiana occupied by (but which may or may not have been induced by) cecidomyiid larvae. This gall superficially resembles that of Contarinia cerasiserotinae but differs in being found on the bud itself, rather than the apex of the stem.
Unless noted otherwise in the ID Notes, observations of this gall are collected in the Observation Field Gallformers Code with value p-virginiana-leaf-bud-gall on iNaturalist. You can view them here: