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Syrphid Fly - Dasysyrphus intrudens - male

Syrphid Fly - Dasysyrphus intrudens - Male
Lacey (near Olympia), Thurston County, Washington, USA
May 4, 2008
Looks like another Dasy*syrphus. Male this time. Any chance of taking this one down to species?

Moved from Dasysyrphus.

I think Dasysyrphus intrudens
I think Dasysyrphus intrudens species complex, using the new Locke and Skevington Key (Zootaxa 3660, 2013). So exciting to have the new genus treatment!

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).

Nice pic! The genus Dasysyrph
Nice pic! The genus Dasysyrphus is very difficult and needs a revision... there are several problems if certain species are valid or not, so there is little chance to get a good species ID...

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