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Diptera.info :: Family forums :: Asilidae Forum
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Asilidae: Stichopogon argenteus [was Unknown fly on sand (USA)]
syncrasy
#1 Print Post
Posted on 02-07-2010 16:38
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Location: Chicago
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I can't find this fly in any of my field guides. Seen late June in a dune/scrub habitat near a northeastern Illinois beach.

Click image to enlarge.

swanson-media.com/photos/identification/sandfly-june-2010/_DSC2247sm.JPG
Edited by syncrasy on 07-07-2010 13:46
 
syncrasy
#2 Print Post
Posted on 03-07-2010 03:43
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Location: Chicago
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Anyone willing to point me in the right direction? (family? genus?)
 
Eric Fisher
#3 Print Post
Posted on 03-07-2010 06:04
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Location: California
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Asilidae: Lasiopogon sp.
 
syncrasy
#4 Print Post
Posted on 03-07-2010 12:09
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Thanks, Eric!
 
Eric Fisher
#5 Print Post
Posted on 03-07-2010 19:41
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You're welcome syncrasy -- except, I'm afraid I screwed-up! This robber fly is actually Stichopogon[ argenteus/i]. The genera [i]Stichopogon and Lasiopogon are related, but I was careless...

Cheers,

Eric
 
syncrasy
#6 Print Post
Posted on 04-07-2010 20:53
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Location: Chicago
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No problem, Eric. Thanks for the update. (If I had a better photo, it might have helped.)
 
Ktyr
#7 Print Post
Posted on 28-06-2014 18:58
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Location: Michigan, USA
Posts: 27
Joined: 21.01.12

For what it's worth (four years after the matter!), I'm pretty sure this is actually Stichopogon trifasciatus instead. S. argenteum has the abdomen all light grey, while S. trifasciatus has first tergite grey, next two black, next one grey, next three black, genitalia grey, and its grey is more of the steel-grey variety (like here). You can just make out that pattern through the wings.
For comparison, look at this guy:
http://bugguide.net/node/view/579680/bgimage
 
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