Diptera.info :: Identification queries :: Diptera (adults)
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 Bibio leucopterus ?
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| Robert Heemskerk |
Posted on 23-04-2009 22:13
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 Member Location: Amsterdam, Netherlands Posts: 2082 Joined: 17.10.05 |
hi Flyforum, This afternoon I collected some flies of Bibio sp. First I thought it was Bibio leucopterus, but the stigma in the wing isn't braun and it is quite sharp? I can see some red spines at the third leg (tibia). When I have more time I will make detailed pictures of the spines of leg I. Within this image, is there a Bibio species that fits? place: Amsterdam forest date: 23-04-2009 Greeting Robert Robert Heemskerk attached the following image:  [140.5Kb] Edited by Robert Heemskerk on 23-04-2009 22:13 Greeting, Robert Heemskerk ---- WWW: http://robertheem...ndedag.htm --- |
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| Zeegers |
Posted on 24-04-2009 08:38
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Member Location: Soest, NL Posts: 18976 Joined: 21.07.04 |
I think leucopterus is excellent ID Theo |
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| Robert Heemskerk |
Posted on 24-04-2009 23:39
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Member Location: Amsterdam, Netherlands Posts: 2082 Joined: 17.10.05 |
hi Theo, Thank you for your reaction. I have made the conclussion that the bibio sp. on my pictures are male B. marci. The fly is about 1cm, that fit's also with the dark forewing and the spines on tibia I. Another fly with I collected together with these flies is obviously smaller and got just one darkbraunish spot in the wing! And what also is different, are the spines on tibia I This must be L. leucopterus! The B. leucopterus got spines which are equal in size (tibI). To end this ''lost way'', I put two pictures of the B. leucopterus fly. The size of this fly is also obviously smaller. Robert Robert Heemskerk attached the following image:  [90.91Kb] Edited by Robert Heemskerk on 25-04-2009 08:49 Greeting, Robert Heemskerk ---- WWW: http://robertheem...ndedag.htm --- |
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| Robert Heemskerk |
Posted on 24-04-2009 23:40
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Member Location: Amsterdam, Netherlands Posts: 2082 Joined: 17.10.05 |
spines
Robert Heemskerk attached the following image:  [138.21Kb] Edited by Robert Heemskerk on 24-04-2009 23:40 Greeting, Robert Heemskerk ---- WWW: http://robertheem...ndedag.htm --- |
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| Robert Heemskerk |
Posted on 24-04-2009 23:41
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Member Location: Amsterdam, Netherlands Posts: 2082 Joined: 17.10.05 |
Look at the spines at tibia I, they are different in size!
Robert Heemskerk attached the following image:  [110.04Kb] Edited by Robert Heemskerk on 25-04-2009 00:01 Greeting, Robert Heemskerk ---- WWW: http://robertheem...ndedag.htm --- |
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| Zeegers |
Posted on 25-04-2009 08:49
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Member Location: Soest, NL Posts: 18976 Joined: 21.07.04 |
I'm having second thoughts. The spines are much too unequal, unless the angle of view is playing tricks. So you might be right with your original doubt. Need to check my collection. Theo |
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| Robert Heemskerk |
Posted on 25-04-2009 08:49
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Member Location: Amsterdam, Netherlands Posts: 2082 Joined: 17.10.05 |
And this one is the B. leucopterus 
Robert Heemskerk attached the following image:  [99.97Kb] Edited by Robert Heemskerk on 25-04-2009 08:51 Greeting, Robert Heemskerk ---- WWW: http://robertheem...ndedag.htm --- |
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| Robert Heemskerk |
Posted on 25-04-2009 08:52
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Member Location: Amsterdam, Netherlands Posts: 2082 Joined: 17.10.05 |
and the spines on tibia I, which are equal in size (B. leucopterus) Robert Heemskerk attached the following image:  [115.39Kb] Edited by Robert Heemskerk on 25-04-2009 09:04 Greeting, Robert Heemskerk ---- WWW: http://robertheem...ndedag.htm --- |
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