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.
Plant Galls of the Western United States
Harmandia sp. B
The bead galls of this midge on aspen leaves are easily distinguished from galls of Harmandia sp C by having openings at the top of each gall, even if they are temporarily plugged with fibrous strands.