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: 7196 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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