Diptera.info :: Identification queries :: Diptera (adults)
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 Tachinidae - Thelaira solivaga
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| tim worfolk |
Posted on 20-05-2009 17:20
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 Member Location: Devon, England Posts: 737 Joined: 05.05.09 |
I believe this is Thelaira solivaga, seems to have more than 2 long ad bristles on mid tarsus, black stripe on abdomen not too wide - can anyone confirm please? Photographed today 20/5/2009, Devon, England; hedge/decid. wood/pasture. Thanks Tim tim worfolk attached the following image:  [124.83Kb] Edited by tim worfolk on 21-05-2009 17:41 |
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| ChrisR |
Posted on 20-05-2009 17:57
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 Administrator Location: Reading, England Posts: 7699 Joined: 12.07.04 |
With so few long bristles it should be T. nigripes ... the width of the black longitudinal median line is a bit of a red herring because it is so variable. 
Manager of the UK Species Inventory in the Angela Marmont Centre for UK Biodiversity at the Natural History Museum, London. |
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| Zeegers |
Posted on 20-05-2009 19:30
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Member Location: Soest, NL Posts: 18532 Joined: 21.07.04 |
Does nigripes occur in the UK I thought it didn't Theo |
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| tim worfolk |
Posted on 20-05-2009 19:51
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Member Location: Devon, England Posts: 737 Joined: 05.05.09 |
Thanks Chris, I'm getting overconfident. This photo - not sure if it's the same individual, but I'm sure it's the same sp. (they were common) - shows the mid tibia better. T.nigripes does occur in Britain. Tim tim worfolk attached the following image:  [140.12Kb] |
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| ChrisR |
Posted on 20-05-2009 21:04
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Administrator Location: Reading, England Posts: 7699 Joined: 12.07.04 |
Zeegers wrote: Does nigripes occur in the UK I thought it didn't T. nigripes has gone through a fair bit of synonymy, with names like nigrina but I'd say it is the commoner of the 3 UK species here in the UK ... solivaga being fairly rare and leucozona known from 6 specimens, I seem to recall
Edited by ChrisR on 20-05-2009 21:22 Manager of the UK Species Inventory in the Angela Marmont Centre for UK Biodiversity at the Natural History Museum, London. |
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| ChrisR |
Posted on 20-05-2009 21:26
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Administrator Location: Reading, England Posts: 7699 Joined: 12.07.04 |
Tim Worfolk wrote: Thanks Chris, I'm getting overconfident. This photo - not sure if it's the same individual, but I'm sure it's the same sp. (they were common) - shows the mid tibia better. Thanks Tim - lovely photos, as usual
Manager of the UK Species Inventory in the Angela Marmont Centre for UK Biodiversity at the Natural History Museum, London. |
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| Zeegers |
Posted on 21-05-2009 11:23
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Member Location: Soest, NL Posts: 18532 Joined: 21.07.04 |
I'm sorry, but both pictures show a distinct ve, so it must be solivaga The right tibia 2 confirms this Theo |
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| ChrisR |
Posted on 21-05-2009 14:13
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Administrator Location: Reading, England Posts: 7699 Joined: 12.07.04 |
Hmm, looks a bit of a difficult one ... but Theo has seen a lot more than me so it must be solivaga Possibly Belshaw's key a bit confusing with the leg bristles ... Tschorsnig just mentions "2 ad" for nigripes but in Belshaw he confuses it by saying "long bristles", implying that short ones are discounted. In this photo I can see 2 long bristles and 2 shorter ones ... but perhaps they are long enough. The ve is also very small ... I'll recheck some of my specimens when I get some time.
Edited by ChrisR on 21-05-2009 14:14 Manager of the UK Species Inventory in the Angela Marmont Centre for UK Biodiversity at the Natural History Museum, London. |
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| tim worfolk |
Posted on 21-05-2009 16:53
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Member Location: Devon, England Posts: 737 Joined: 05.05.09 |
Sounds like I should retitle the thread again, or should I hold off awaiting further developments? Thanks for your help with this one, guys. Tim |
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| Zeegers |
Posted on 21-05-2009 17:11
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Member Location: Soest, NL Posts: 18532 Joined: 21.07.04 |
In nigripes a 3 smaller one on top might be present, but this really is solivaga Theo |
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but don't see the image in the post.