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 Helophilus from 11.04.11 --> H. pendulus
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| Juergen Peters |
Posted on 16-04-2011 21:07
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 Member Location: northwest Germany Posts: 13740 Joined: 11.09.04 |
Hello! Last Monday at sloe hedge (northwest Germany), about 10 mm. Is this Helophilus pendulus? Juergen Peters attached the following image:  [36.46Kb] Edited by Juergen Peters on 17-04-2011 22:50 Best regards, Jürgen -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Juergen Peters Borgholzhausen, Germany WWW: http://insektenfo... -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= |
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| PIERRE MILLE |
Posted on 17-04-2011 16:15
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 Member Location: FRANCE (Conflans Ste Honorine -Yvelines) Posts: 72 Joined: 12.12.09 |
Hello Peters, The ideal is that you present a picture of the thorax and one to see if. Best wishes PIERRE http://cyrille.du...orange.fr/ http://www.hoverf...portal.php |
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| PIERRE MILLE |
Posted on 17-04-2011 16:18
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Member Location: FRANCE (Conflans Ste Honorine -Yvelines) Posts: 72 Joined: 12.12.09 |
I wrote too soon I'm sorry to see the longitudinal stripes on the thorax and the grounds on tergites
PIERRE http://cyrille.du...orange.fr/ http://www.hoverf...portal.php |
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| Juergen Peters |
Posted on 17-04-2011 19:30
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Member Location: northwest Germany Posts: 13740 Joined: 11.09.04 |
Hello, Pierre! PIERRE MILLE wrote: The ideal is that you present a picture of the thorax and one to see if. Thanks, but the animals do not always give me a chance tp get one...  . I was happy to get two pictures at all from my first Helophilus this year. Below the second one.
Juergen Peters attached the following image:  [34.12Kb] Best regards, Jürgen -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Juergen Peters Borgholzhausen, Germany WWW: http://insektenfo... -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= |
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| John Carr |
Posted on 17-04-2011 20:14
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 Member Location: Massachusetts, USA Posts: 9934 Joined: 22.10.10 |
I think this is not Helophilus but another Eristalini. In North America Helophilus always has a broad stigma (vs. narrow in Parhelophilus and Lejops), and I haven't heard that this character is any different in Europe. |
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| Juergen Peters |
Posted on 17-04-2011 20:37
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Member Location: northwest Germany Posts: 13740 Joined: 11.09.04 |
Hello, John! John Carr wrote: I think this is not Helophilus but another Eristalini. In North America Helophilus always has a broad stigma (vs. narrow in Parhelophilus and Lejops), and I haven't heard that this character is any different in Europe. Hmm... I had one Parhelophilus here many years ago, but 99,99% of those flies are Helophilus (and 99% of them either pendulus or trivittatus). I would be glad, if this would be not the case here... Edited by Juergen Peters on 17-04-2011 20:39 Best regards, Jürgen -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Juergen Peters Borgholzhausen, Germany WWW: http://insektenfo... -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= |
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| Gerard Pennards |
Posted on 17-04-2011 22:20
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 Member Location: Amersfoort Posts: 1914 Joined: 07.06.04 |
Helophilus pendulus it is.....
Greetings, Gerard Pennards |
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| Juergen Peters |
Posted on 17-04-2011 22:50
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Member Location: northwest Germany Posts: 13740 Joined: 11.09.04 |
Gerard Pennards wrote: Helophilus pendulus it is..... Thank you, Gerard! Best regards, Jürgen -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Juergen Peters Borgholzhausen, Germany WWW: http://insektenfo... -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= |
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| John Carr |
Posted on 18-04-2011 02:39
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Member Location: Massachusetts, USA Posts: 9934 Joined: 22.10.10 |
Manual of Nearctic Diptera distinguishes Helophilus from similar genera with Pterostigma elongate, not simulating a crossvein, at most slightly darkened basally. Abdomen oval, with large orange markings on at least tergite 2... Helophilus Meigen Pterostigma very short, simulating a crossvein. Abdomen oval to slender, variable in color... 111 Couplet 111 et seq. distinguish Parhelophilus and Lejops. This fly has a crossvein-like pterostigma and would not key to Helophilus in MND. What character is used to distinguish European Eristalini with striped thorax? |
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