Diptera.info :: Identification queries :: Diptera (adults)
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 Tachinidae > Medina separata (male)
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| Stephen R |
Posted on 12-07-2010 12:44
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 Member Location: Clitheroe Lancashire UK Posts: 2396 Joined: 12.06.09 |
5.5mm Clitheroe England 11 July 2010 More photos and specimen if needed. Stephen R attached the following image:  [125.27Kb] Edited by Stephen R on 13-07-2010 23:05 |
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| Stephen R |
Posted on 12-07-2010 12:45
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Member Location: Clitheroe Lancashire UK Posts: 2396 Joined: 12.06.09 |
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Stephen R attached the following image:  [132.36Kb] |
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| Stephen R |
Posted on 12-07-2010 12:46
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Member Location: Clitheroe Lancashire UK Posts: 2396 Joined: 12.06.09 |
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Stephen R attached the following image:  [52.24Kb] |
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| ChrisR |
Posted on 12-07-2010 18:18
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 Administrator Location: Reading, England Posts: 7699 Joined: 12.07.04 |
Hmm, something like Medina perhaps? 
Manager of the UK Species Inventory in the Angela Marmont Centre for UK Biodiversity at the Natural History Museum, London. |
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| Stephen R |
Posted on 12-07-2010 20:36
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Member Location: Clitheroe Lancashire UK Posts: 2396 Joined: 12.06.09 |
Thanks Chris. That looks plausible Anything I should check on the specimen? |
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| ChrisR |
Posted on 12-07-2010 21:00
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Administrator Location: Reading, England Posts: 7699 Joined: 12.07.04 |
Hmm, I'd just key it in Belshaw (1993) if you have a specimen ... they're quite anonymous little flies and I don't know any good rules-of-thumb
Manager of the UK Species Inventory in the Angela Marmont Centre for UK Biodiversity at the Natural History Museum, London. |
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| Stephen R |
Posted on 13-07-2010 10:27
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Member Location: Clitheroe Lancashire UK Posts: 2396 Joined: 12.06.09 |
Thanks, I'll keep it till I have the book. |
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| Zeegers |
Posted on 13-07-2010 20:26
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Member Location: Soest, NL Posts: 18547 Joined: 21.07.04 |
Yes, this should be Medina. Probably separata. Look for the peculiar bunch of very long hairs on the genitalia. Theo |
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| Stephen R |
Posted on 13-07-2010 23:01
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Member Location: Clitheroe Lancashire UK Posts: 2396 Joined: 12.06.09 |
Thanks Theo. I've just spent the evening chasing it through the Central Europe key (thanks Chris ). I arrived at Medina multispina/separata, and of these only separata is on the British list, so I think I'll claim my first success The bunch of hairs looks about right. |
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| ChrisR |
Posted on 13-07-2010 23:11
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Administrator Location: Reading, England Posts: 7699 Joined: 12.07.04 |
Result! Glad you managed Peter's key - it is superbly written but not the easiest to master on your first attempt
Edited by ChrisR on 13-07-2010 23:11 Manager of the UK Species Inventory in the Angela Marmont Centre for UK Biodiversity at the Natural History Museum, London. |
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| Stephen R |
Posted on 14-07-2010 13:22
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Member Location: Clitheroe Lancashire UK Posts: 2396 Joined: 12.06.09 |
Here's a view showing the hairs on sternite 5
Stephen R attached the following image:  [62.81Kb] |
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| Stephen R |
Posted on 14-07-2010 13:23
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Member Location: Clitheroe Lancashire UK Posts: 2396 Joined: 12.06.09 |
another
Stephen R attached the following image:  [60.21Kb] |
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| Stephen R |
Posted on 14-07-2010 13:31
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Member Location: Clitheroe Lancashire UK Posts: 2396 Joined: 12.06.09 |
I must admit that if M. multispina had been on the menu I might have been tempted. The hairs do not obviously curl forward at the tip, the calypters look light rather than dark brown to me, and there is dense anterior dusting on the tergites, albeit only laterally. Good thing I don't live in France or Germany, or I might have gone wrong here
Stephen R attached the following image:  [86.05Kb] |
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| Stephen R |
Posted on 14-07-2010 13:31
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Member Location: Clitheroe Lancashire UK Posts: 2396 Joined: 12.06.09 |
Dusting:
Stephen R attached the following image:  [80Kb] |
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| Stephen R |
Posted on 14-07-2010 13:34
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Member Location: Clitheroe Lancashire UK Posts: 2396 Joined: 12.06.09 |
For the record, here's a posterior view of the hair-bunches crossing each other.
Stephen R attached the following image:  [95.06Kb] |
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| ChrisR |
Posted on 14-07-2010 14:39
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Administrator Location: Reading, England Posts: 7699 Joined: 12.07.04 |
Hard to say from the photos but if you'd like to send it to me I could check it myself, just to be sure Don't discount species from mainland Europe out of hand because we tend to add 1 or 2 'new' species to the British list every year - that's one good reason for using the European key if you are ever in any doubt 
Manager of the UK Species Inventory in the Angela Marmont Centre for UK Biodiversity at the Natural History Museum, London. |
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| Stephen R |
Posted on 14-07-2010 17:16
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Member Location: Clitheroe Lancashire UK Posts: 2396 Joined: 12.06.09 |
Thanks, I'll send it to you |
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| Zeegers |
Posted on 14-07-2010 17:39
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Member Location: Soest, NL Posts: 18547 Joined: 21.07.04 |
Looks like separata to me. I have never seen multispina and I would never ID a male of this species without comparison. Separata should be common, even in Britain. Theo |
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| ChrisR |
Posted on 14-07-2010 18:31
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Administrator Location: Reading, England Posts: 7699 Joined: 12.07.04 |
I don't actually have a Media seperata in my collection but they seem to be restricted to southern England, which suggests that they are certainly not common. I'd certainly like to see it and key it to make sure - and if Stephen doesn't need it then I'd give it a good home
Manager of the UK Species Inventory in the Angela Marmont Centre for UK Biodiversity at the Natural History Museum, London. |
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| Stephen R |
Posted on 14-07-2010 19:50
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Member Location: Clitheroe Lancashire UK Posts: 2396 Joined: 12.06.09 |
If you need one, of course you can have it Chris. I'll post it tomorrow.
Edited by Stephen R on 14-07-2010 19:50 |
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