Diptera.info :: Identification queries :: Diptera (adults)
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 Muscid, recalling Coenosia -> Helina?
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| Sundew |
Posted on 12-02-2009 01:54
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 Member Location: Berlin and Baden-Württemberg, Germany Posts: 3890 Joined: 28.07.07 |
Hi, I suppose this one is to enlarge my Coenosia collection. However, the leg colour does not seem to match C. tigrina. Can you tell me more? (Habitat: my garden in June, as usual.) Thanks, Sundew Sundew attached the following image:  [125.42Kb] Edited by Sundew on 12-02-2009 03:15 |
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| Sundew |
Posted on 12-02-2009 01:54
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Member Location: Berlin and Baden-Württemberg, Germany Posts: 3890 Joined: 28.07.07 |
Some more pics.
Sundew attached the following image:  [149.35Kb] |
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| Tony Irwin |
Posted on 12-02-2009 02:24
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 Member Location: Norwich, England Posts: 7223 Joined: 19.11.04 |
This looks to have four sternopleural bristles, so unlikely to be Coenosiinae - I think its more likely to be a Helina species
Tony ---------- Tony Irwin |
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| Sundew |
Posted on 12-02-2009 14:37
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Member Location: Berlin and Baden-Württemberg, Germany Posts: 3890 Joined: 28.07.07 |
I'm sorry - the thorax part in question is not well visible. Here are some enlarged pics; maybe, an expert's eye will see more.
Sundew attached the following image:  [151.42Kb] |
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| Stephane Lebrun |
Posted on 12-02-2009 20:17
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 Member Location: Le Havre, France Posts: 8248 Joined: 03.03.07 |
With this combination of characters I think it could be Helina confinis.
Stephane. |
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| Stephane Lebrun |
Posted on 12-02-2009 21:13
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Member Location: Le Havre, France Posts: 8248 Joined: 03.03.07 |
The first pictures were enough to show that were present 2 anterior setae on katepisternum, and if there are 2 anterior, there are also 2 posterior ones (combination in Helina is either 1+2 or 2+2 ant+post ks setae).  Coenosia have only 3 ks setae, which are equidistant to each others (arranged in an inverted equilateral triangle). Stephane. |
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| Sundew |
Posted on 12-02-2009 23:33
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Member Location: Berlin and Baden-Württemberg, Germany Posts: 3890 Joined: 28.07.07 |
That's higher maths... I've read about Coenosia's bristle triangle meanwhile and shall focus my camera macrolens on the katepisternum in future (if the fly is willing)  Many thanks, Stephane. Edited by Sundew on 12-02-2009 23:33 |
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