Diptera.info :: Identification queries :: Diptera (adults)
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 Diptera on the beach in Poland, Gdansk
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| Robert Zoralski |
Posted on 26-05-2007 09:06
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Member Location: Gdansk, Poland Posts: 173 Joined: 20.08.06 |
There were thousands of them on the beach between Gdansk and Sopot (Poland) 13.05.2007. All wet with the sea water. It look like they could be thrown from the sea. Could you help with identification and tell what did they do on the beach this time?
Robert Zoralski attached the following image:  [100.38Kb] |
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| Robert Zoralski |
Posted on 26-05-2007 09:07
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Member Location: Gdansk, Poland Posts: 173 Joined: 20.08.06 |
one more picture
Robert Zoralski attached the following image:  [104.38Kb] |
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| Robert Zoralski |
Posted on 26-05-2007 09:09
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Member Location: Gdansk, Poland Posts: 173 Joined: 20.08.06 |
there were some diptera of this genus too. but less than the genus showed above. Robert Zoralski attached the following image:  [100.2Kb] |
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| Robert Zoralski |
Posted on 26-05-2007 09:10
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Member Location: Gdansk, Poland Posts: 173 Joined: 20.08.06 |
dietailted picture
Robert Zoralski attached the following image:  [103.4Kb] |
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| Kahis |
Posted on 26-05-2007 10:46
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 Member Location: Helsinki, Finland Posts: 1999 Joined: 02.09.04 |
Both are Bibio (Diptera: Bibionidae). Bibionids have rather pronounced sexual dimorphism. The first one is a female and the 2nd one a male. Probably not of the same species though.
Kahis |
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| Zeegers |
Posted on 27-05-2007 15:27
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Member Location: Soest, NL Posts: 18794 Joined: 21.07.04 |
Kahis is quite right ! The wing venation is different. The male (last) one is either Bibio marci or leucopterus, the female is something in the johannis - varipes complex. Theo Zeegers |
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