Diptera.info :: Identification queries :: Diptera (adults)
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 Tachinid or Rhinophorid?
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| conopid |
Posted on 09-07-2006 00:37
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 Member Location: United Kingdom Posts: 1039 Joined: 02.07.04 |
I have keyed this out as Leucostoma simplex, which seems very unlikely, given its status in the UK. Although I have used Belshaw to confirm it is a Tachinid, I am wondering if I have gone wrong and it is actually a Rhinophorid. The photo of the subscutellum below shows a brown area between the scutellum and subscutellum, but this appears to be a flat area on the top part of the subscutellum, rather than a joining membrane. This is a small fly, about 5mm in length. It has very large eyes. Any help gratefully received (one for Chris Raper me-thinks). conopid attached the following image:  [107.64Kb] Nigel Jones, Shrewsbury, United Kingdom |
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| conopid |
Posted on 09-07-2006 00:39
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Member Location: United Kingdom Posts: 1039 Joined: 02.07.04 |
Photo of scutellum below
conopid attached the following image:  [66.43Kb] Nigel Jones, Shrewsbury, United Kingdom |
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| ChrisR |
Posted on 09-07-2006 00:40
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 Administrator Location: Reading, England Posts: 7699 Joined: 12.07.04 |
Looks like Phasia pusilla (Tachinidae) - does it have black haltares and black hairs on the gena?  |
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| Nikita Vikhrev |
Posted on 09-07-2006 00:40
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 Member Location: Moscow, Russia Posts: 9336 Joined: 24.05.05 |
Anyway Chris will correct my, so why not say what I think: may be Phasia (barbifrons/obesa)? Nikita Vikhrev - Zool Museum of Moscow University |
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| conopid |
Posted on 09-07-2006 00:42
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Member Location: United Kingdom Posts: 1039 Joined: 02.07.04 |
Blimey Chris, that was very quick! I will just go and check now. Do they call this live workshopping? Nigel Jones, Shrewsbury, United Kingdom |
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| conopid |
Posted on 09-07-2006 00:47
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Member Location: United Kingdom Posts: 1039 Joined: 02.07.04 |
Yes, it has black halteres and black hairs on the gena. Thanks for help Chris, I will be able to see where I have gone wrong in the key now. - I love this web site! For info. Fly caught today at Venus Pool, Cound, Shropshire at GR SJ553062 Nigel Jones, Shrewsbury, United Kingdom |
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| ChrisR |
Posted on 09-07-2006 00:54
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Administrator Location: Reading, England Posts: 7699 Joined: 12.07.04 |
As the firing squad says - "we aim to please"  If you're in doubt about rhinophorids - try my page here http://tachinidae.../rhino.php Edited by ChrisR on 09-07-2006 00:55 |
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| conopid |
Posted on 09-07-2006 01:01
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Member Location: United Kingdom Posts: 1039 Joined: 02.07.04 |
Hi Chris, I did in fact refer to a printed copy of your page. I just wanted to be sure it was not a Rhinophorid, because the brown colour threw me into doubt. I went wrong at Couplet 95 - presence of distinct bristles on abdomen. To my untrained eye all the hairs look like bristles! At least they would certainly pass as bristles in Syrphidae, my area of "expertise". I have plenty more Tachinids awaiting ID. It's going to be along hard winter of staring down a microscope! Cheers Nigel Nigel Jones, Shrewsbury, United Kingdom |
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| ChrisR |
Posted on 09-07-2006 01:04
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Administrator Location: Reading, England Posts: 7699 Joined: 12.07.04 |
Actually, I made the same mistake a while back - some Phasia have very large hairs on T4 and T5 and I managed to make a Phasia into a Graphogaster . This was years ago though, in my youth - but I only just noticed the mistake!! So, now I have to write up the correction ... but fortunately it turns out that the specimen is Phasia barbifrons and it is (as far as I know) the earliest known record of this species in Britain!! |
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