Diptera.info :: Identification queries :: Diptera (adults)
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 Tiny Skinny Asilid
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| Stephen |
Posted on 13-10-2006 14:00
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 Member Location: West Virginia USA Posts: 1322 Joined: 12.04.05 |
Genus Tipulogaster? When I first saw this fly at a distance, I thought it was a wasp. Seeing it through the viewfinder, though, I recognized it as a small robber fly. Have I got the genus right? Female, judging by the plump abdomen? Length, 4.2 mm. Photographed flying slowly through the weeds along a very small stream. Meadow and woodland nearby. West Virginia USA. Photographed 1 October 2006. --Stephen Stephen Cresswell www.americaninsects.net |
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| Stephen |
Posted on 13-10-2006 14:01
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Member Location: West Virginia USA Posts: 1322 Joined: 12.04.05 |
Second view
Stephen attached the following image:  [53.05Kb] --Stephen Stephen Cresswell www.americaninsects.net |
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| Paul Beuk |
Posted on 13-10-2006 14:40
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 Super Administrator Location: Netherlands Posts: 19268 Joined: 11.05.04 |
In Europe this would be Leptogaster. I do not know whether there are related genera in the Nearctic.
Paul - - - - Paul Beuk on https://diptera.info |
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| Stephen |
Posted on 13-10-2006 15:08
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Member Location: West Virginia USA Posts: 1322 Joined: 12.04.05 |
Bugguide.net has three genera listed for subfamily Leptogastrinae in the Nearctic: Leptogaster, Tipulogaster, and Psilonyx. Most of the BugGuide images are Tipulogaster, which my image seems to match. But there is only one Leptogaster image on the site to compare to. No info on BugGuide about how to separate Leptogaster from Tipulogaster, unfortunately.
--Stephen Stephen Cresswell www.americaninsects.net |
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| Dmitry Gavryushin |
Posted on 13-10-2006 16:03
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 Member Location: Moscow region, Russia Posts: 3303 Joined: 17.10.05 |
Stephen, you coul try Geller-Grimm & Artigas's key for Leptogastrinae (http://www.geller...rinae.html), especially if you have more pictures, including the head close-ups. As far as i can see the difference between Leptogaster and Tipulogaster is in the length of flagellum compared with the combined length of scape and pedicel; you should exclude other genera, though (there's more than 3 of them...)
Edited by Dmitry Gavryushin on 13-10-2006 16:03 |
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| Stephen |
Posted on 16-10-2006 11:32
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Member Location: West Virginia USA Posts: 1322 Joined: 12.04.05 |
Thank-you Black for that link! I will work with it soon, though unfortunately I don't have any good photos of the head except in lateral view. I see I uploaded only one of the two pictures, so here is the other one. The fly flew everytime I took a photo, and I only got two got photos before I lost her in the weeds. Stephen attached the following image:  [43.84Kb] --Stephen Stephen Cresswell www.americaninsects.net |
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but don't see the image in the post.
