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Photo#1942676
Stem borer, Prenanthes - Melanagromyza

Stem borer, Prenanthes - Melanagromyza
Dunning's Spring, Winneshiek County, Iowa, USA
January 12, 2021
Puparium in stem. Note the escape tunnel, which leads from the puparium to one of the two exterior holes visible in the previous image

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Stem borer, Prenanthes - Melanagromyza Stem borer, Prenanthes - Melanagromyza Stem borer, Prenanthes - Melanagromyza Stem borer, Prenanthes - Melanagromyza Stem borer, Prenanthes - Melanagromyza