Diptera.info :: Identification queries :: Diptera (adults)
 Coenosiinae No!=Phaonia fuscata
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| philporter |
Posted on 16-11-2010 16:14
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Member Location: Lincoln UK Posts: 554 Joined: 07.02.07 |
A new group for me so help appreciated. Lincoln July 2010. Hind tibia 1 ad (mid); 1 pd (apical half); 2 small anterior-ventral bristles; eyes very sparsely micro-hairy, antennae plumose, 2 pd on mid tibia; 3 thoracic dc; 2 scutellar marginals; palpus black. Phil Porter philporter attached the following image:  [86.14Kb] Edited by philporter on 16-11-2010 21:04 |
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| philporter |
Posted on 16-11-2010 16:15
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Member Location: Lincoln UK Posts: 554 Joined: 07.02.07 |
pleural bristles confirm family?
philporter attached the following image:  [117.22Kb] |
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| philporter |
Posted on 16-11-2010 16:16
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Member Location: Lincoln UK Posts: 554 Joined: 07.02.07 |
head profile
philporter attached the following image:  [85.34Kb] |
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| philporter |
Posted on 16-11-2010 16:17
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Member Location: Lincoln UK Posts: 554 Joined: 07.02.07 |
Abdomen pattern
philporter attached the following image:  [94.79Kb] |
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| philporter |
Posted on 16-11-2010 16:17
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Member Location: Lincoln UK Posts: 554 Joined: 07.02.07 |
thorax
philporter attached the following image:  [88.64Kb] |
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| Stephane Lebrun |
Posted on 16-11-2010 19:58
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 Member Location: Le Havre, France Posts: 8248 Joined: 03.03.07 |
I think this specimen is very misleading : first, the 3 sternopleural (katepisternal) bristles seem to form an equilateral triangle, and there are only 3 post dc -> suggests a Coenosinae indeed. But Coenosinae haven't any pre-alar setae ; this fly has got a long one on each side. This is a Phaoniinae. Secondly, the abdomen seems to have paired spots like Helina have. But Helina haven't any pd on hind tibia (except H. longicornis wich have 3 evenly strong pd). This fly is a female of Phaonia fuscata, and the spot-like pattern on abdomen is the broad triangular marks that this species bear on tergites 2-3 (but seem divided here).
Stephane. |
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| oxycera |
Posted on 16-11-2010 20:48
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Member Location: Barnsley, South Yorkshire Posts: 251 Joined: 31.12.09 |
...very useful and impressive diagnosis. |
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| philporter |
Posted on 17-11-2010 10:54
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Member Location: Lincoln UK Posts: 554 Joined: 07.02.07 |
I can only agree with Oxycera, Stephane, or should I say Hercule Poirot! Phil Porter |
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