2.0mm bl, hatched from Willow Rosette gall. Laguna Beach, Orange County, CA. 11/17/10. © Peter J. Bryant.

Willow Rosette Gall Midge

Rabdophaga salicisbrassicoides

Diptera: Cecidomyiidae

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Willow Rosette Gall. Laguna Beach, Orange County, CA. 10/10/10. © Peter J. Bryant.

Willow Rosette Gall, sectioned longitudinally and showing inducer larva. Laguna Beach, Orange County, CA. 6/24/10. © Peter J. Bryant.

Mason Regional Park, Irvine, CA. 9-29-11. © Joan Avise.

Upper Newport Bay, Newport Beach, CA. 10-07-11. © Joan Avise.