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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Flies (Diptera) » "Aschiza" » Hover Flies (Syrphidae) » Syrphinae » Syrphini » Dasysyrphus » venustus group (Dasysyrphus venustus group) » intrudens complex (Dasysyrphus intrudens)
Photo#180630
Syrphid Fly - Dasysyrphus intrudens - female
Copyright © 2008 Kevin Hall

Syrphid Fly - Dasysyrphus intrudens - Female
Lacey (near Olympia), Thurston County, Washington, USA
May 4, 2008
Dasy*syrphus possibly?
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Contributed by Kevin Hall on 4 May, 2008 - 5:42pm
Last updated 11 December, 2013 - 1:32pm

Moved
Moved from Dasysyrphus.
… v belov, 11 December, 2013 - 1:32pm login or register to post comments

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).
… Kelsey J.R.P. Byers, 9 December, 2013 - 1:45am login or register to post comments

Yes
Female Dasysyrphus, and it could be D. osborni!
greetings
… Gerard Pennards, 5 May, 2008 - 4:43am login or register to post comments

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