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Diptera.info :: Identification queries :: Diptera (adults)
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Tachinidae - Lydina aenea
Morten A Mjelde
#1 Print Post
Posted on 11-08-2022 22:01
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 Light trap in garden. Southern Norway 10 August. Body length: 5.9 mm.
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Edited by Morten A Mjelde on 13-08-2022 17:59
 
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Morten A Mjelde
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Zeegers
#9 Print Post
Posted on 12-08-2022 07:50
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 First impression is Lydina, bit it is not as black as I am used to. Maybe result of the strong flash ?

Theo
 
John Carr
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Posted on 12-08-2022 13:23
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Zeegers wrote:
First impression is Lydina, bit it is not as black as I am used to. Maybe result of the strong flash ?

Theo


I was also thinking Polideini. Sternite 5 has the right shape for Lydina (O'Hara 2002 figure 72).
 
http://www.flickr.com/photos/31715949@N00
Zeegers
#11 Print Post
Posted on 12-08-2022 14:08
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 Good point. If you still have the specimen, you can check whether lappets of posterior spiracle are “Rhinophorid / Polideini”- like

Theo
 
Morten A Mjelde
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Posted on 12-08-2022 22:58
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 Thank you so much John and Theo!
The fly is rather dark. I think it may be similar to Lydina aenea (which I found in a light trap on 1 August last year), but the third antennal segment is different. Not sure what "Rhinophorid / Polideini"- like is, but perhaps the attached picture can tell something.
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Zeegers
#13 Print Post
Posted on 13-08-2022 07:09
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 This is what it is Smile

There are two lappets of equal size, which is very unusual in Tachinidae and the almost unique feature for Polideini.

In other Tachinidae, one lappet fills the whole aperture and the other is strongly reduced.


Theo
 
Morten A Mjelde
#14 Print Post
Posted on 13-08-2022 12:27
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 Thanks! Interesting! So then it's Lydina aenea? Cannot find Lydina or Polideini in The Tachinids (Diptera: Tachinidae) of Central Europe.

Morten
 
John Carr
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Morten A Mjelde wrote:
Thanks! Interesting! So then it's Lydina aenea? Cannot find Lydina or Polideini in The Tachinids (Diptera: Tachinidae) of Central Europe.

Morten


You have only the one species in Europe. It keys out at couplet 114 with summary on page 95 in the English version of The Tachinids (Diptera: Tachinidae) of Central Europe. That publication places Lypha and Lydina in tribe Linnaemyini. The original German version was written before O'Hara defined the Polideini and revised the North American species.
 
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Morten A Mjelde
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Posted on 13-08-2022 17:58
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 Thank you very much, John, for the useful information!

Morten
 
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