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Photo#1387790
Rhopalomyia crassulina on Symphyotrichum ericoides - Rhopalomyia

Rhopalomyia crassulina on Symphyotrichum ericoides - Rhopalomyia
Mehan, Payne County, Oklahoma, USA
June 16, 2017
gall with exuviae collection 3387

Images of this individual: tag all
Rhopalomyia crassulina on Symphyotrichum ericoides - Rhopalomyia Rhopalomyia crassulina on Symphyotrichum ericoides - Rhopalomyia Rhopalomyia crassulina on Symphyotrichum ericoides - Rhopalomyia

Moved
Moved from Unidentified Galls.

It seems like there are three named species that make similar galls and may or may not be synonymous... although R. crassulina is the illustrated one (reared from "Aster crassulus"), R. gemmaria (Stebbins) is the one that was reared from ericoides, so that might be the better tentative name to put on your midge (unless Ray has figured more out about these species since 1989).

On the identification
I showed images to Ray Gagne, who wrote "Mike, it is, I think, a Rhopalomyia. I believe you have my red book: see fig. 166 on page 170, the gall of Rhopalomyia crassulina. Asphondylias have brownish, rigid pupal skins and their antennae have only 12 flagellomeres (segments of the flagellum). Congratulations all the same because you are probably the first to rear anything from this gall in 108 years, since Cockerell found it."

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