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Photo#1958398
Stem borer, Symphyotrichum - Melanagromyza

Stem borer, Symphyotrichum - Melanagromyza
River Trail, Decorah, Winneshiek County, Iowa, USA
April 18, 2021
Stem borer overwintering as a puparium in stem of an aster (Symphyotrichum sp.) with heart-shaped leaves

Assuming my tentative ID of Melanagromyza sp. is correct, to my knowledge this is the first record of an agromyzid stem borer in Symphyotrichum

Images of this individual: tag all
Stem borer, Symphyotrichum - Melanagromyza Stem borer, Symphyotrichum - Melanagromyza