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These galls make neat circles on their host: carbonifera goldenrod gall midge.

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Flat, circular, white galls with a thin navy blueish ring near the edge. The host is goldenrod. Taken in September 2022. 4 flat, circular, whiteish galls with a thick blue purple ring near the edge and a blue purple center. The host is goldenrod. There is a thick, yellowish green ring around the galls. Taken in July 2022. Flat, circular, white galls with a thin navy blueish ring near the edge and a navy blueish center. The host is goldenrod. Taken in September 2021.
September 11, 2025 at 5:04 PM