Diptera.info :: Identification queries :: Diptera (adults)
 Muscid?
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| John Bratton |
Posted on 11-05-2012 15:19
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Member Location: Menai Bridge, North Wales, UK Posts: 670 Joined: 17.10.06 |
I think this is a muscid, but got nowhere trying to key it using Fonseca 1968. Any suggestions, please? It was caught 9 May 2012 on foredunes at Newborough Warren, Anglesey, N. Wales. Three more pictures to follow. John Bratton John Bratton attached the following image:  [39.17Kb] |
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| John Bratton |
Posted on 11-05-2012 15:20
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Member Location: Menai Bridge, North Wales, UK Posts: 670 Joined: 17.10.06 |
Double row of spinules along fore edge of wing.
John Bratton attached the following image:  [21.37Kb] |
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| John Bratton |
Posted on 11-05-2012 15:23
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Member Location: Menai Bridge, North Wales, UK Posts: 670 Joined: 17.10.06 |
Head
John Bratton attached the following image:  [21.33Kb] |
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| John Bratton |
Posted on 11-05-2012 15:23
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Member Location: Menai Bridge, North Wales, UK Posts: 670 Joined: 17.10.06 |
Front tarsi
John Bratton attached the following image:  [21.65Kb] |
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| Stephane Lebrun |
Posted on 11-05-2012 18:59
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 Member Location: Le Havre, France Posts: 8248 Joined: 03.03.07 |
John, I see practically nothing on these photos, but just one idea to start : could you check for Macrorchis meditata ?
Stephane. |
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| John Bratton |
Posted on 12-05-2012 10:27
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Member Location: Menai Bridge, North Wales, UK Posts: 670 Joined: 17.10.06 |
Thanks, I'll try that. Do you mean the photos are lousy or I haven't photographed the right parts? I can't get sharp pictures showing all the setae, as I'm just holding the camera at the microscope eyepiece, and depth of field is poor. I was hoping it had enough jizz. Thanks for your suggestion, John |
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| Stephane Lebrun |
Posted on 12-05-2012 11:29
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Member Location: Le Havre, France Posts: 8248 Joined: 03.03.07 |
The photo are very dark and the legs chaetotaxy is difficult to see. It is true the front tarsus is rarely important in Muscidae, unless you suspected a Lispocephala in the alma-group or something else. The orbital are not visible (maybe they are broken ?) If only one pair, it should be M. meditata, but the ball is in your court to tell us...
Stephane. |
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| John Bratton |
Posted on 14-05-2012 16:49
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Member Location: Menai Bridge, North Wales, UK Posts: 670 Joined: 17.10.06 |
I had another go with Fonseca's key. It has four sternopleurals, so rules out M. meditata. And three post-sutural dorsocentrals, so rules out the one coenosid that has four sternopleurals. I eventually got it to Helina protuberans, and the genitalia fit the figure in Gregor et al. Does it look OK for that species, please? I fully accept you can't see the sternopleurals in my pictures. John |
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| Stephane Lebrun |
Posted on 15-05-2012 21:07
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Member Location: Le Havre, France Posts: 8248 Joined: 03.03.07 |
Very possible. The frons is broad then ? I don't personally know that species.
Stephane. |
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| John Bratton |
Posted on 16-05-2012 10:07
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Member Location: Menai Bridge, North Wales, UK Posts: 670 Joined: 17.10.06 |
Yes, the frons fits OK. John |
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