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 cluster of tan-brown globular galls on the base of petioles of Quercus macrocarpa. Similar to galls of Andricus quercusstrobilanus but always globular, sometimes flattened at the intersection of two galls but never with the raised geometric facets that define that gall. Observed in Texas from August through November.
Unless noted otherwise in the ID Notes, observations of this gall are collected in the Observation Field Gallformers Code with value q-macrocarpa-petiole-cluster on iNaturalist. You can view them here: