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Diptera.info :: Identification queries :: Diptera (adults)
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Which Tachinidae? => Thelaira cf. nigripes
Karsten Thomsen
#1 Print Post
Posted on 25-11-2021 15:27
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At edge of broadleaf forest, Tyskermose, Assens, Funen, Denmark, 25. juni 2021.
Karsten Thomsen attached the following image:


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Edited by Karsten Thomsen on 26-11-2021 19:55
 
Karsten Thomsen
#2 Print Post
Posted on 25-11-2021 15:28
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Unfortunately, no better head shots.
Karsten Thomsen attached the following image:


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eklans
#3 Print Post
Posted on 25-11-2021 18:36
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Hi Karsten, a male Thelaira solivaga, I think.
Greetings, Eric
 
Zeegers
#4 Print Post
Posted on 26-11-2021 09:29
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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
 
eklans
#5 Print Post
Posted on 26-11-2021 10:13
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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
 
Lucyna
#6 Print Post
Posted on 26-11-2021 11:42
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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 11:43
 
Karsten Thomsen
#7 Print Post
Posted on 26-11-2021 13:51
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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.
 
Lucyna
#8 Print Post
Posted on 26-11-2021 14:49
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Carefully Wink . You need to be sure how many bristles there are on the middle tibia.
 
Zeegers
#9 Print Post
Posted on 26-11-2021 19:20
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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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23.09.21 15:29
All sorted.

16.09.21 22:24
Sorry put 5 new threads in Asilidae forum instead in Syrphidae forum, can pleas an admin move it to Syrph? THANKS, Norbert

09.09.21 07:48
https://www.jeugdb
ondsuitgeverij.nl/
product/de-vliegen
families-met-drie-
voetkussentjes/

09.09.21 07:47
wing ventation is totally different

03.09.21 12:51
Hi, what's the major difference between dolichopodidae and rhagionidae? Can someone help me? Thanks!

28.06.21 15:24
thx TO eklans

03.06.21 11:11
@Tony Irwin Thank you Tony! I've emailed you there Pfft

02.06.21 22:26
Rob - can you PM me with an e-mail address, and I'll send it over.

02.06.21 13:16
Hello chaps! Does anyone have a copy of: Revision of the willow catkin flies, genus Egle Robineau-Desvoidy (Diptera: Anthomyiidae), in Europe and neighbouring areas ?? I'd be ever so grateful! Rob

31.05.21 14:31
The part that got deleted is "longer, dark median stripe on thorax"

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