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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Flies (Diptera) » "Aschiza" » Hover Flies (Syrphidae) » Syrphinae » Syrphini » Syrphus » Syrphus torvus
Photo#229985
Syrphini 02 - Syrphus torvus - female
Copyright © 2008 Karl Volkman

Syrphini 02 - Syrphus torvus - Female
Canyon Park, Bothell, Snohomish County, Washington, USA
September 28, 2008
A specimen attracted to and nectaring on fall blooming Clematis
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Contributed by Karl Volkman on 30 September, 2008 - 2:07am
Last updated 4 October, 2023 - 12:28pm

Moved
Moved from Syrphini.
… Kelsey J.R.P. Byers, 4 October, 2023 - 12:28pm login or register to post comments

Syrphus torvus ... female
Syrphus torvus ... female
… Bill Dean, 4 October, 2023 - 10:58am login or register to post comments

Moved
Moved from Dasysyrphus.
… v belov, 11 December, 2013 - 3:42pm login or register to post comments

Not an expert on Dasysyrphus
Not an expert on Dasysyrphus vs. Syrphus (and I can't see the critical character, because who can see the dorsal surface of the lower calypter on a photo?), but this fly seems strange for a Dasysyrphus to me - the maculae are very straight, with pointed rather than rounded ends.

If it is Dasysyrphus, then it could be one of venustus (if the maculae reach the abdominal margin on the outside edge, which I can't tell) or pacificus/pauxillus (if the maculae don't reach the margin). The fact that the maculae are very close to touching is also strange, since this is not D. creper, the only Dasysyrphus with touching maculae that would be in this region.

Someone else with more experience than me - is this Dasysyrphus or Syrphus torvus or something else entirely?

(sorry to be the bearer of skepticism! I'd be glad to be told I'm crying wolf)
… Kelsey J.R.P. Byers, 11 December, 2013 - 3:12pm login or register to post comments

Moved
Moved from Syrphini.
… Karl Volkman, 4 October, 2008 - 7:48pm login or register to post comments

Female
Dasysyrphus sp. (hairy eyes)
… Gerard Pennards, 4 October, 2008 - 5:15pm login or register to post comments

 
?
What characteristics identifies this fly as Dasysyrphus rather than Syrphus torvus?
… Ted Kropiewnicki, 5 February, 2009 - 8:45pm login or register to post comments

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