Diptera.info :: Identification queries :: Diptera (adults)
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 Bibio hortulanus ?
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| pierred |
Posted on 14-04-2006 20:17
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 Member Location: Paris (France) Posts: 1437 Joined: 21.04.05 |
Hello, Seen today 14th April 2006, Paris, 7-9 mm. At first sight, I thought that Bibio marci was really small this year (with the late spring?). Later on, I saw the single black cell on the wings. I'm wrong with B. hortulanus? pierred attached the following image:  [100.56Kb] Edited by pierred on 14-04-2006 20:18 Pierre Duhem |
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| Zeegers |
Posted on 15-04-2006 13:30
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Member Location: Soest, NL Posts: 18821 Joined: 21.07.04 |
Bonjour Pierre, B. hortulanus has legs all black, as does marci. This is B. johannis, one of the most early spring species. Easily recognized by the very dark pterostigma, as you correctly observed. And of course the reddish tibiae (as lanigerus, etc...) Theo Zeegers |
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| pierred |
Posted on 15-04-2006 17:07
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Member Location: Paris (France) Posts: 1437 Joined: 21.04.05 |
Theo, Thanks a lot for the correction and for the reasons why. Pierre Duhem |
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| Gordon Jar |
Posted on 16-04-2006 14:47
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Member Location: East Sussex, England Posts: 209 Joined: 09.10.05 |
The attached was photographed in South East England on 13/04/06. Would this also be B. johannis. It seems to fit the description as set out above. Thanks Gordon Gordon Jar attached the following image: [641].jpg) [76.94Kb] |
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| Zeegers |
Posted on 16-04-2006 16:54
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Member Location: Soest, NL Posts: 18821 Joined: 21.07.04 |
No, this is not johannis, most likely the other very common species: lanigerus. Why ? the stigma is brown, not black. Johannis is easy to recognize in the field: all hairs on both thorax and abdomen are black. In lanigerus many hairs are light. But I can't see this feature on the pictures. Theo |
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| Gordon Jar |
Posted on 16-04-2006 17:01
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Member Location: East Sussex, England Posts: 209 Joined: 09.10.05 |
Thankyou very much for the useful explanation. Gordon |
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