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Photo#740263
Dolichopodidae - Sciapus wiedemanni - female

Dolichopodidae - Sciapus wiedemanni - Female
Lewis & Clark Natural History Park, Clatsop County, Oregon, USA
October 6, 2012
Size: 3-4 mm
From Bioblitz at Lewis & Clark NHP

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Dolichopodidae - Sciapus wiedemanni - female Dolichopodidae - Sciapus wiedemanni - female

Range expansion
If my ID is correct this is a range expansion of an introduced population of Sciapus wiedemanni. It was discovered in Pierce County, Washington in 1931.

Edit: Dr. Dan Bickel, the authority on Sciapodinae, confirms Sciapus possibly wiedemanni but would need a male for ID.

Moved
Moved from ID Request.

Sciapus
Forked M and spines under fore femora should make this a Sciapus but it's a bit weird.