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 Which Tachinidae? => Thelaira cf. nigripes
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| Karsten Thomsen |
Posted on 25-11-2021 14:27
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 Member Location: Posts: 585 Joined: 07.01.16 |
At edge of broadleaf forest, Tyskermose, Assens, Funen, Denmark, 25. juni 2021.
Edited by Karsten Thomsen on 26-11-2021 18:55 |
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| Karsten Thomsen |
Posted on 25-11-2021 14:28
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Member Location: Posts: 585 Joined: 07.01.16 |
Unfortunately, no better head shots. |
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| eklans |
Posted on 25-11-2021 17:36
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Member Location: Posts: 3337 Joined: 11.11.18 |
Hi Karsten, a male Thelaira solivaga, I think.
Greetings, Eric Kloeckner |
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| Zeegers |
Posted on 26-11-2021 08:29
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Member Location: Posts: 18446 Joined: 21.07.04 |
Thelaira it is, but why solivaga ? I don’t see an other vertical and I don’t see many strong ad on mid tibia. Theo |
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| eklans |
Posted on 26-11-2021 09:13
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Member Location: Posts: 3337 Joined: 11.11.18 |
I used the T&H key Males solivaga: "...light side spots of the abdomen extended, clearly visible from above." "dorsal hairs of tergites 3 and 4 fine, as long as 1/7 - 1/5 of the marginal bristles" Males nigripes: "...abdomen usually appears dark when seen from above." "middle dorsal hairs of tergites 3 and 4 as long as 1/4 - 2/5 of the marginal bristles" The other characters are not clearly visible but may be present, I thought. Greetings, Eric Kloeckner |
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| Lucyna |
Posted on 26-11-2021 10:42
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Member Location: Posts: 60 Joined: 23.11.21 |
Thelaira sp. (For example Thelaira nigripes: 2 anterodorsal setae bristles, Thelaira solivaga: 3-4 anterodorsal setae bristles on the middle tibia - They are twin species) Regards Lucyna Edited by Lucyna on 26-11-2021 10:43 |
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| Karsten Thomsen |
Posted on 26-11-2021 12:51
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Member Location: Posts: 585 Joined: 07.01.16 |
In Denmark, all Thelaira have so far been attributed to nigripes. if this one belongs to T. solivaga, it would be the first record nationally. |
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| Lucyna |
Posted on 26-11-2021 13:49
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Member Location: Posts: 60 Joined: 23.11.21 |
Carefully  . You need to be sure how many bristles there are on the middle tibia. |
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| Zeegers |
Posted on 26-11-2021 18:20
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Member Location: Posts: 18446 Joined: 21.07.04 |
You should not only look for what you see, but also for ehat you don’t see (see my previous post). And I don’t think tha central dorsal hairs on tergites can be evaluated from these pics, yes the laterals can be done, but that is not what T&H are saying. To me, this is either Thelaira spec or even cf. nigripes and the distribution seems to agree. Theo |
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