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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Irregularly globular Polystepha galls on the lower surface of leaves of Quercus imbricaria, in numbers in the fall. Red-brown in color and surfaced in polygonal sections.
Unless noted otherwise in the ID Notes, observations of this gall are collected in the Observation Field Gallformers Code with value q-imbricaria-raspberry-gall on iNaturalist. You can view them here: