Diptera.info :: Identification queries :: Diptera (adults)
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 This one will be a challenge
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| Stephen |
Posted on 13-11-2006 23:00
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 Member Location: West Virginia USA Posts: 1322 Joined: 12.04.05 |
The biggest, plumpest fly feeding at the Sugar Maple sap. Either Calliphoridae or Muscidae, right? If this much is correct, then how to separate the two? The fly has plumose arista, which could be either, right? The coloration is gray-black like most Muscids but there was just a tiny hint of green on the abdomen so maybe Calliphoridae after all? I guess the real bad news is that I didn't get a lateral view  .Any ID help would be appreciated. Woodlands, West Virginia USA, 11 November 2006. Length 14.5 mm from the front of the eyes to the rear of the abdomen. Stephen attached the following image:  [90.64Kb] Edited by Stephen on 13-11-2006 23:02 --Stephen Stephen Cresswell www.americaninsects.net |
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| Stephen |
Posted on 13-11-2006 23:08
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Member Location: West Virginia USA Posts: 1322 Joined: 12.04.05 |
Second image.
Stephen attached the following image:  [146.05Kb] --Stephen Stephen Cresswell www.americaninsects.net |
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| Tony Irwin |
Posted on 13-11-2006 23:49
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 Member Location: Norwich, England Posts: 7277 Joined: 19.11.04 |
Hi Stephen The acute bend on vein M suggests Calliphoridae - at least I don't think any muscids have such a sharp bend. I wouldn't like to say which genus, though! Tony ---------- Tony Irwin |
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| Xespok |
Posted on 14-11-2006 14:11
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 Member Location: Debrecen, Hungary Posts: 5551 Joined: 02.03.05 |
Would not be surprised if it is Calliphora. Calliphora has a sharp bend in vein M in comparison to most Calliphorid genera, and also the large size and the blueish color hints to that genus. |
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| Robert Nash |
Posted on 14-11-2006 14:22
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Member Location: Ulster Museum, Belfast, Ireland Posts: 288 Joined: 11.11.05 |
Calliphoridae Try Richard MERRITT Michigan State University Department of entomology E LANSING, MI, 48824 Email :merrittr@msu.edu Cheers Robert |
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| Stephen |
Posted on 15-11-2006 10:56
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Member Location: West Virginia USA Posts: 1322 Joined: 12.04.05 |
Thanks, Robert, I will ask Professor Merritt if he can have a look.
Edited by Stephen on 15-11-2006 13:11 --Stephen Stephen Cresswell www.americaninsects.net |
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