Diptera.info :: Identification queries :: Diptera (adults)
 Not a new tachinid for Finland
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| Jaakko |
Posted on 05-11-2010 22:52
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 Member Location: Joensuu, Finland Posts: 479 Joined: 04.08.08 |
Hi, Freshly under the microscope: Microphtalma europaea female from South-Eastern Finland. Courtesy Jari F. I guess leaves no doubt: hairy arista, black hairs on cheecks, typical face profile, wing-vein appendix, yellow tibiae... In the Central European keys recorded from Austria and "North to Paris". Quite a leap! Climate change? Noo...  In the same box three Billaea kolomyetzi (1m2f), three different locations! Seems to be becoming a trivial species in South Finland... :-) Jaakko attached the following image:  [86.51Kb] Edited by Jaakko on 06-11-2010 23:51 |
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| Jaakko |
Posted on 05-11-2010 22:53
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Member Location: Joensuu, Finland Posts: 479 Joined: 04.08.08 |
Wing and habitus
Jaakko attached the following image:  [100.99Kb] |
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| Jaakko |
Posted on 05-11-2010 22:54
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Member Location: Joensuu, Finland Posts: 479 Joined: 04.08.08 |
Tibia (not sharp, sorry)
Jaakko attached the following image:  [18.93Kb] |
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| ChrisR |
Posted on 05-11-2010 23:12
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 Super Administrator Location: Reading, England Posts: 7706 Joined: 12.07.04 |
I am not at all familiar with Micropthalma but shouldn't the median vein have a long appendix? Looks quite Estheria-like to me. Is the inside of the fore coxa really covered with small hairs? EDIT: I haven't had a chance to look seriously at Jari's tachinids yet but I did see 1 male B.kolomyetzi in there too 
Edited by ChrisR on 05-11-2010 23:14 Manager of the UK Species Inventory in the Angela Marmont Centre for UK Biodiversity at the Natural History Museum, London. |
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| JariF |
Posted on 06-11-2010 08:13
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 Member Location: Helsinki, Finland Posts: 2072 Joined: 20.01.06 |
Good news ! Thank's As I wrote last summer was very special as the number of flies was so high. Jari |
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| Zeegers |
Posted on 06-11-2010 17:53
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Member Location: Soest, NL Posts: 19308 Joined: 21.07.04 |
I'm afraid I agree with Chris: it seems to be an Estheria, most likely picta (you can see the darkened crossvein !). Arguments: the arista is too long in comparison with the antenna for Microphthalma, the vibrissa too low, the gena have some kind of occipital dilation and there are too many hairs on the parafacial. Moreover, in frontal view the facial ridges are extremely converging in Microphthalma towards the mouth edge, nearly touching. Theo So please check indeed the front coxa and compare with Dexisoma and some Dexiini: the difference should be very obvious |
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| JariF |
Posted on 06-11-2010 18:25
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Member Location: Helsinki, Finland Posts: 2072 Joined: 20.01.06 |
Well this won't spoil my happiness at all because as far as I know Estheria picta would be a new one to Finland as well  Jari |
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| KWQ |
Posted on 06-11-2010 18:28
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Member Location: Turku, Finland Posts: 208 Joined: 10.12.04 |
I was just writing a similar comment - but JariF was slightly faster. So - congratulations! |
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| Jaakko |
Posted on 06-11-2010 23:58
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Member Location: Joensuu, Finland Posts: 479 Joined: 04.08.08 |
Hold on to your horses... Inside of fore coxae with this guy are hairy... But it is Estheria and the species is petiolata.  So forget about it. I obviously had a set mindset when getting so many features right for Microphtalma. Never seen eitherone before, though... Jaakko attached the following image:  [92.61Kb] |
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| Jaakko |
Posted on 07-11-2010 00:04
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Member Location: Joensuu, Finland Posts: 479 Joined: 04.08.08 |
Just to make it straight: petiolata because of the black humeral callus. r-m is darkened only in "homeopathic" way. |
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| ChrisR |
Posted on 07-11-2010 00:26
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Super Administrator Location: Reading, England Posts: 7706 Joined: 12.07.04 |
The photo of the fore coxa to me shows a bare inner surface ... when you see the "real thing" it is quite obvious but without seeing it you can convince yourself that the few hairs on the inner surface are enough  This is one thing that I would like to image properly one day and put online ... it's a very tricky feature to decide on unless you have determined material to show you both choices In a Dexiosoma (and presumably Microphthalma, though I haven't got one to check) there would be a carpet of tiny bristlets over most of the inner surface of the fore coxae.
Edited by ChrisR on 07-11-2010 00:33 Manager of the UK Species Inventory in the Angela Marmont Centre for UK Biodiversity at the Natural History Museum, London. |
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| JariF |
Posted on 07-11-2010 07:24
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Member Location: Helsinki, Finland Posts: 2072 Joined: 20.01.06 |
Still happy after all, because I only had one before (picture in the gallery) Jari |
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| Zeegers |
Posted on 07-11-2010 11:17
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Member Location: Soest, NL Posts: 19308 Joined: 21.07.04 |
I'm glad I added 'most likely' to picta, pictures can be misleading ! Theo |
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