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 sp.
Larva on male catkin
The specific damage to the catkins made by this undescribed species is unknown, but in spring the full-grown yellow larvae drop in such great numbers as to cover the surface of the ground.
Unless noted otherwise in the ID Notes, observations of this gall are collected in the Observation Field Gallformers Code with value q-palustris-male-catkin-larvae on iNaturalist. You can view them here: