Diptera.info :: Identification queries :: Diptera (adults)
 Tachinidae
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| kurt |
Posted on 27-07-2009 19:23
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Member Location: Posts: 4340 Joined: 27.11.08 |
I think this fly is a Norwickia and had marklini last year in same place. This one looks a bit different from that. Could species be told from this pictures? Same fly on both pictures. Photo from Nattsjön, Ångermanland, Sweden 62.56N 17.36 E 26 july 2009 Thanks for your help in advance Regards Kurt Holmqvist kurt attached the following image:  [77.76Kb] Edited by kurt on 27-07-2009 19:25 |
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| kurt |
Posted on 27-07-2009 19:26
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Member Location: Posts: 4340 Joined: 27.11.08 |
One more
kurt attached the following image:  [86.87Kb] |
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| Zeegers |
Posted on 27-07-2009 20:59
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Member Location: Soest, NL Posts: 19299 Joined: 21.07.04 |
Yes, it is Nowickia marklini (or the rare and very similar alpina) THeo |
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| kurt |
Posted on 27-07-2009 21:27
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Member Location: Posts: 4340 Joined: 27.11.08 |
Thanks for your answer Theo. I have some more photos of another speciemen from same lokation and day, but abdomen looking quite different. I will post a new thread later. What needs to see on fotos to sort out alpina? |
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| Zeegers |
Posted on 28-07-2009 07:53
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Member Location: Soest, NL Posts: 19299 Joined: 21.07.04 |
Oh, that is difficult. I guess I'd need a very good lateral head shot. I need to see the length of the arista relative to the antenna. Theo |
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| ChrisR |
Posted on 28-07-2009 10:09
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 Super Administrator Location: Reading, England Posts: 7706 Joined: 12.07.04 |
I know it's not a keyable feature but N.marklini (and possibly alpina?) appears to be much blacker than other European species - I have never seen them close-up but I examined a good series of marklini in Moscow this year. 
Manager of the UK Species Inventory in the Angela Marmont Centre for UK Biodiversity at the Natural History Museum, London. |
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| Jaakko |
Posted on 07-08-2009 12:13
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 Member Location: Joensuu, Finland Posts: 479 Joined: 04.08.08 |
Hi, Using the T&H it is not possible to reliably identify the Scandinavian specimens of marklini and alpina. All the alpina I have seen have been on treeless mountaintops ja marklini in lowlands. Typically marklini is much bigger, but this in parasitoids is not a good feature as you know. Some differences: N. alpina Hairs behind the head cream-white Face with greyish-white pollination, fronto-orbital region almost black Males: preandrial sternite "blunt arrow" -shaped N. marklini Overall more orange appearance: hairs behind the head orange, also calypters, basicosta and facial pollination rather orange. Basicosta can be black in some specimens! Fronto-orbital region with unpollinated small dots. Preandrial sternite different. Probably bigger differences in the male genitalia, but I haven't checked them... By comparison these two species are easy to differentiate. The fly in the photos looks like a marklini, also the habitat makes this likelier. Jaakko Edited by Jaakko on 07-08-2009 12:17 |
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| kurt |
Posted on 07-08-2009 18:46
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Member Location: Posts: 4340 Joined: 27.11.08 |
Thanks for your good explenation of differenses between marklini and alpina. Kurt Holmqvist |
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