Diptera.info :: Identification queries :: Diptera (adults)
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| Petr Michael |
Posted on 08-04-2010 14:22
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Member Location: Czech rep. Posts: 289 Joined: 03.10.09 |
This species is resting on birch trunk - 5mm long only. The photo was taken in East Bohemia, CZ, 3rd of April, 2010, edge of deciduous forest. Absolutely unknown for me... I am sending the second photo in order to see its head better. Petr Michael attached the following image:  [80.43Kb] |
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| ChrisR |
Posted on 09-04-2010 09:43
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 Administrator Location: Reading, England Posts: 7699 Joined: 12.07.04 |
This photo looks a bit contrasy (caused by the dark fly against a white background) so the fly is probably a bit darker than it was in life. I'm guessing Lypha dubia for this one 
Manager of the UK Species Inventory in the Angela Marmont Centre for UK Biodiversity at the Natural History Museum, London. |
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| Petr Michael |
Posted on 09-04-2010 12:22
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Member Location: Czech rep. Posts: 289 Joined: 03.10.09 |
Thanks Chris, I compared the face of Lypha dubia on the " Dimitry Gavrushin 2007 photo No 13801 " in "Tachinid Recording Scheme" of UK tachinids and I have found the differences mainly as for the character of bristle rows between the frontal stripe and eye: as you can see on my photo (I enclose it once more) there are 3-(4) rows of tiny black "spots" downwards. Furthermore the 3rd segment of antennae is dissimilar. Well, I am taken aback... The problem, however, must go on! Thanks once more Petr Petr Michael attached the following image:  [75.27Kb] |
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| Zeegers |
Posted on 09-04-2010 18:54
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Member Location: Soest, NL Posts: 18560 Joined: 21.07.04 |
Petr convinced me Alternative: Blepharomyia spec. (given the width of vertex, must be male Bl. pagana) Theo |
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| Jaakko |
Posted on 11-04-2010 20:37
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 Member Location: Joensuu, Finland Posts: 479 Joined: 04.08.08 |
B. pagana males have very characteristic round antennae, too bad that the profile does not show well. I can't really see the downward curving bristle combs on the cheeks either... To my memory Blepharomya also have bare eyes?? I would still vote for L. dubia... |
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| Petr Michael |
Posted on 12-04-2010 11:22
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Member Location: Czech rep. Posts: 289 Joined: 03.10.09 |
Jaakko, I - as unfamiliar with Tachinidae - am always very glad to have got correct identification. Never- theless the differencies - mentioned above (#3) - are, I think, noticeable. Are the bristles arrangement and the form of 3rd anntena segment - on my photo (enclosed the magnification) - still in accord with a characteristics of Lypha dubia? Thank you for confirmation. Petr Michael |
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| Petr Michael |
Posted on 12-04-2010 11:34
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Member Location: Czech rep. Posts: 289 Joined: 03.10.09 |
I apologize for mistake!!! I enclose the photo Petr Petr Michael attached the following image:  [64.11Kb] |
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| Jaakko |
Posted on 12-04-2010 13:44
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Member Location: Joensuu, Finland Posts: 479 Joined: 04.08.08 |
I think that the bristles you see in the picture are still frontal bristles, which in L. dubia reach quite down. Attached a picture of B. pagana face (a male), where the downward curved bristles reach all the way down the face.
Jaakko attached the following image:  [12.97Kb] Edited by Jaakko on 12-04-2010 13:46 |
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but don't see the image in the post.