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Syrphid Fly - Dasysyrphus intrudens - female

Syrphid Fly - Dasysyrphus intrudens - Female
Lacey (near Olympia), Thurston County, Washington, USA
May 4, 2008
Dasy*syrphus possibly?

Moved from Dasysyrphus.

I think Dasysyrphus intrudens
I think Dasysyrphus intrudens species complex, using the new Locke and Skevington key (Zootaxa 3660, 2013). (this complex includes D. osburni if I'm reading the paper correctly)

The maculae on tergies 3-4 appear to reach the edge of the abdomen, maculae on tergite 2 are large, and the maculae on 3+4 fit the description of the intrudens species complex (arcuate/lunulate, U/V shape on anterior edge, constricted in the middle, large swelling on medial edge) better than they fit venustus (venustus is described as the maculae being transverse, constricted slightly medially, medial edge swollen slightly).

Female Dasysyrphus, and it could be D. osborni!

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