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Photo#1462348
Stem borer, Hieracium - Melanagromyza new-species-on-hieracium

Stem borer, Hieracium - Melanagromyza new-species-on-hieracium
Fish Farm Mounds WMA, Allamakee County, Iowa, USA
September 30, 2017
See also

(includes images of a reared adult)

Stem borer in Hieracium scabrum

Thanks to J. Pearson for the plant ID

Adults had emerged by the time I came upon affected stems (except, apparently, for the one in the thumbnail image above). Placement under Melanagromyza sp. is speculative, based on the existence of other species in this genus that are known to bore in herbaceous stems, pupate therein, and leave behind straw-colored exuviae. This one will apparently need to be reared to get a conclusive ID, as Spencer and Steyskal's 1986 manual does not list Hieracium as a host

Moved
Moved from Melanagromyza.

Moved
Moved from Agromyzinae.

Moved
Moved from Melanagromyza.

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