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Photo#509892
Syrphid fly - Dasysyrphus intrudens - female

Syrphid fly - Dasysyrphus intrudens - Female
Elkton, Douglas County, Oregon, USA
September 22, 2010
My first guess is Eupeodes volucris, but the images in the guide show a thin stripe at the back of the thorax, which mine doesn't have. Any suggestions?

Images of this individual: tag all
Syrphid fly - Dasysyrphus intrudens - female Syrphid fly - Dasysyrphus intrudens - female

Moved
Moved from Dasysyrphus.

I think Dasysyrphus intrudens
I think Dasysyrphus intrudens species complex, using the new Locke and Skevington Key (Zootaxa 3660, 2013), but it could also be D. venustus. venustus appears to not show up in OR, but since its range is somewhat scattered that's not a character I'm comfortable excluding on.

The maculae on tergies 3-4 appear to reach the edge of the abdomen, maculae on tergite 2 are large, so we reach the branch point in the key between venustus and the intrudens species complex. To me, 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), but this is a judgment call in the case of this fly.

Moved
Moved from Syrphid Flies.

Dasysyrphus sp.
Female, this genus has hairy eyes and the yellow marks on the abdomen have a characteristc shape....
Greetings

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