Diptera.info :: Identification queries :: Diptera (adults)
 Siphona geniculata
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| Roger Thomason |
Posted on 16-10-2009 17:26
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 Member Location: Mossbank,Shetland Isles. Posts: 5269 Joined: 17.07.08 |
About the only fly seen in the garden today, other than the odd Anthomyiidae and Bluebottles  .It is the only species of Tachinidae recorded in Shetland. Correct ID?? Roger Thomason attached the following image:  [167.42Kb] Edited by ChrisR on 16-10-2009 20:25 |
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| Roger Thomason |
Posted on 16-10-2009 17:27
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Member Location: Mossbank,Shetland Isles. Posts: 5269 Joined: 17.07.08 |
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Roger Thomason attached the following image:  [158.05Kb] |
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| lagura |
Posted on 16-10-2009 18:01
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 Member Location: Helsingborg, Sweden Posts: 1241 Joined: 24.10.08 |
Well, it's definitely a Siphona  Edit: And it could very well be geniculata Edited by lagura on 16-10-2009 18:16  |
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| Roger Thomason |
Posted on 16-10-2009 18:18
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Member Location: Mossbank,Shetland Isles. Posts: 5269 Joined: 17.07.08 |
Well spotted Lars....you are getting good at this. What is your secret.  Roger  |
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| lagura |
Posted on 16-10-2009 18:20
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Member Location: Helsingborg, Sweden Posts: 1241 Joined: 24.10.08 |
If I told you that it would no longer be a secret 
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| ChrisR |
Posted on 16-10-2009 20:25
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 Super Administrator Location: Reading, England Posts: 7706 Joined: 12.07.04 |
Hmm, certainly Siphona ... but can you see median marginal bristles on T1+2? Most S.geniculata (and some cristata) have them. The main problem is that in the north you get quite a few very interesting/rare species and the situation isn't as clear-cut as it is in the south
Manager of the UK Species Inventory in the Angela Marmont Centre for UK Biodiversity at the Natural History Museum, London. |
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| Roger Thomason |
Posted on 16-10-2009 22:09
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Member Location: Mossbank,Shetland Isles. Posts: 5269 Joined: 17.07.08 |
Thanks Chris I wouldn't know a median marginal bristle if it poked me in the eye, sorry mate... I'll never get into the terminology used for flies,,,, Regards nevertheless, Roger |
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| ChrisR |
Posted on 16-10-2009 22:16
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Super Administrator Location: Reading, England Posts: 7706 Joined: 12.07.04 |
Don't worry Roger - the median marginals on T1+2 are easy ... it's the ones that this fly doesn't have  T1+2 is the first segment of the abdomen (closest to the thorax) that has that funny excavation in the middle - very clear in the first photo. I don't think it has these bristles but I am still left not much the wiser ... even with a specimen I am very bad at identifying Siphona 
Manager of the UK Species Inventory in the Angela Marmont Centre for UK Biodiversity at the Natural History Museum, London. |
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