Diptera.info :: Identification queries :: Diptera (adults)
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 dilophus sp.
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| Robert Heemskerk |
Posted on 27-08-2006 01:28
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 Member Location: Amsterdam, Netherlands Posts: 2082 Joined: 17.10.05 |
hi flyforum, This looks like a Dilophus sp. to me.. Is it a male Dilophus femoratus?  robert heemskerk, Robert Heemskerk attached the following image:  [72.95Kb] Edited by Robert Heemskerk on 27-08-2006 01:35 |
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| Zeegers |
Posted on 27-08-2006 10:43
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Member Location: Soest, NL Posts: 18611 Joined: 21.07.04 |
It's a male Dilophus. They can only by IDed by their genitalia. However, D. febrilis is much more common than femoratus. Theo Zeegers |
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| Robert Heemskerk |
Posted on 03-09-2006 00:46
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Member Location: Amsterdam, Netherlands Posts: 2082 Joined: 17.10.05 |
Hi Theo, Are the Dilophus female sp. also difficult to identify? Today I found very much Doliphus sp., It must be ~ 5000 (and more..) male and female together. place: Gaasperplas (Amsterdam) size ~ 10mm Robert Heemskerk attached the following image:  [86.78Kb] Edited by Robert Heemskerk on 03-09-2006 11:05 |
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| Zeegers |
Posted on 03-09-2006 15:32
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Member Location: Soest, NL Posts: 18611 Joined: 21.07.04 |
This is a female D. febrilis, easily recognized by the very dark wings. The only common species in The Netherlands. And the only one outside the dune area (so far) Theo Zeegers |
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| Juergen Peters |
Posted on 03-09-2006 20:46
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 Member Location: northwest Germany Posts: 13740 Joined: 11.09.04 |
Hello! Sorry for linking to a german post in another (my own) forum, but I did not get an answer there, whether the numerous Bibionidae which can be found now (photos from September-01) are also Dilophus febrilis. Is it normal to find 95% females and only occasional males? Thanks for any replies! http://insektenfo...eadid=3037 (Click on images for larger versions.) Edited by Juergen Peters on 03-09-2006 20:47 Best regards, Jürgen -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Juergen Peters Borgholzhausen, Germany WWW: http://insektenfo... -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= |
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| Zeegers |
Posted on 03-09-2006 22:13
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Member Location: Soest, NL Posts: 18611 Joined: 21.07.04 |
Hi Juergen, The answers to all your questions are: YES Yes, it is normal to see many Dilophus in late summer, Yes, they are D. febrilis (second generation) and yes, you see in some place more females. Males form clouds as in Empididae, females are more frequent on flowers. Yours are febrilis as well (females with dark wings, easy) Theo Zeegers |
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| Juergen Peters |
Posted on 04-09-2006 01:06
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Member Location: northwest Germany Posts: 13740 Joined: 11.09.04 |
Hello, Theo! Zeegers wrote: The answers to all your questions are: YES Thanks a lot! Yes, it is normal to see many Dilophus in late summer But I can't remember to ever have seen *that* many :-). Best regards, Jürgen -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Juergen Peters Borgholzhausen, Germany WWW: http://insektenfo... -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= |
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but don't see the image in the post.