Diptera.info :: Identification queries :: Diptera (adults)
 Huge thorax and skinny little abdomen
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| Stephen |
Posted on 27-05-2007 19:46
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 Member Location: West Virginia USA Posts: 1322 Joined: 12.04.05 |
I like how this fly is hugely robust on the thorax and then has a thin little abdomen. Scathophagidae, right? Can anyone shed any light on ID to genus? West Virginia USA, 26 May 2007, alongside a very small woodland stream. Length about 6.4 mm. Stephen attached the following image:  [66.55Kb] --Stephen Stephen Cresswell www.americaninsects.net |
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| Stephen |
Posted on 27-05-2007 19:47
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Member Location: West Virginia USA Posts: 1322 Joined: 12.04.05 |
Here is a frontal view of this fly.
Stephen attached the following image:  [95.69Kb] --Stephen Stephen Cresswell www.americaninsects.net |
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| jorgemotalmeida |
Posted on 27-05-2007 19:49
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 Member Location: Viseu - PORTUGAL Posts: 9296 Joined: 05.06.06 |
Lauxaniidae... Sapromyza sp. ? (it is a test, as Nikita used to says)  |
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| Stephen |
Posted on 27-05-2007 20:02
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Member Location: West Virginia USA Posts: 1322 Joined: 12.04.05 |
And just to make it interesting, is this one same family? It is a different individual. What huge eyes (so, a male?) This one has an even smaller abdomen that doesn't seem to match the huge thorax. Same location as the first fly, a couple of days earlier, size just a little smaller. Stephen attached the following image:  [111.22Kb] --Stephen Stephen Cresswell www.americaninsects.net |
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| Stephen |
Posted on 27-05-2007 20:03
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Member Location: West Virginia USA Posts: 1322 Joined: 12.04.05 |
Here is a look at the front of fly #2.
Stephen attached the following image:  [91.86Kb] --Stephen Stephen Cresswell www.americaninsects.net |
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| jorgemotalmeida |
Posted on 27-05-2007 20:22
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Member Location: Viseu - PORTUGAL Posts: 9296 Joined: 05.06.06 |
different sexes. one female and the other is male. let?s go wait for real experts. |
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| Nikita Vikhrev |
Posted on 27-05-2007 20:29
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 Member Location: Moscow, Russia Posts: 9511 Joined: 24.05.05 |
I think it is Anthomyiidae, genus Pegomya. It looks very much alike our Pegomya testacea, which is only Palearctic species. Nikita Nikita Vikhrev - Zool Museum of Moscow University |
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| jorgemotalmeida |
Posted on 27-05-2007 20:32
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Member Location: Viseu - PORTUGAL Posts: 9296 Joined: 05.06.06 |
in the first case, anal vein doesn?t reach wing margin. is it one of exceptions among Anthomyiidae?  |
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| Stephen |
Posted on 28-05-2007 11:09
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Member Location: West Virginia USA Posts: 1322 Joined: 12.04.05 |
Thank-you Jorge, Nikita! Time for me to go and look at some pictures.
--Stephen Stephen Cresswell www.americaninsects.net |
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| Nikita Vikhrev |
Posted on 03-06-2007 12:40
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Member Location: Moscow, Russia Posts: 9511 Joined: 24.05.05 |
I'd cancel my compare with P. testacea, but I still think it is some Pegomya of Anthomyiidae. Jorge: the fact that it seems by photo that anal vein doesn?t reach wing margin doesn't mean that it doesn't reach it really, it is bad visible character for photo...
Nikita Vikhrev - Zool Museum of Moscow University |
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