Diptera.info :: Identification queries :: Diptera (adults)
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 Thelaira (Tachinidae)
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| Rui Andrade |
Posted on 14-04-2009 23:42
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 Member Location: Portugal Posts: 3123 Joined: 19.06.07 |
Hi, I need help with this tachinid. Is it possible, from these pictures, to tell the species? I think it could be T. solivaga. location: Barcelos, Portugal date: 27/09/2008   Middle tibia:  |
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| ChrisR |
Posted on 15-04-2009 08:57
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 Super Administrator Location: Reading, England Posts: 7706 Joined: 12.07.04 |
Two long bristles on the tibia suggests T.nigripes and the large orange side patches suggest T.solivaga ... and this shows the problems with Thelaira identification  My guess would be T.nigripes 
Manager of the UK Species Inventory in the Angela Marmont Centre for UK Biodiversity at the Natural History Museum, London. |
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| Rui Andrade |
Posted on 15-04-2009 23:21
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Member Location: Portugal Posts: 3123 Joined: 19.06.07 |
Thank you Chris. I was having difficulties interpreting the number of bristles in the mid tibia relevant to the identification. |
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| ChrisR |
Posted on 16-04-2009 08:47
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Super Administrator Location: Reading, England Posts: 7706 Joined: 12.07.04 |
Yes, that is a common problem. I think the key really should say "large ad bristles" because the smaller ones would normally qualify as "ad bristles" in other species but for the purposes of the Thelaira key they don't. Well, that's my interpretation anyway Also, the amount of orange on the abdomen really is very variable and can only act as a secondary feature.
Manager of the UK Species Inventory in the Angela Marmont Centre for UK Biodiversity at the Natural History Museum, London. |
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