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Diptera.info :: Identification queries :: Diptera (adults)
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Stevenia deceptoria sl. << Stevenia (France)
CedricMondy
#1 Print Post
Posted on 01-07-2021 09:53
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Location: Île-de-France (France)
Posts: 105
Joined: 30.06.21

Hello everyone,

For this one, I managed to go to Stevenia and after discussion, we think it might be S. umbratica or S. kugleri.

Thank you for your help!


www.galerie-insecte.org/galerie/image/dos284/big/P1631654_01.jpg
Cédric Mondy : France : Saint-Maur-des-Fossés : 94100 : 20/06/2021
Altitude : 39 m - Taille : 7.3 mm
Réf. : 284800

www.galerie-insecte.org/galerie/image/dos284/big/P1631666.jpg
Cédric Mondy : France : Saint-Maur-des-Fossés : 94100 : 20/06/2021
Altitude : 39 m - Taille : 7.3 mm
Réf. : 284801

www.galerie-insecte.org/galerie/image/dos284/big/P1631663.jpg
Cédric Mondy : France : Saint-Maur-des-Fossés : 94100 : 20/06/2021
Altitude : 39 m - Taille : 7.3 mm
Réf. : 284808
Edited by CedricMondy on 12-06-2022 22:25
Cédric
 
CedricMondy
#2 Print Post
Posted on 05-07-2021 08:42
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Location: Île-de-France (France)
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Could someone help me for this one?
Cédric
 
Zeegers
#3 Print Post
Posted on 05-07-2021 08:55
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Location: Soest, NL
Posts: 19133
Joined: 21.07.04

Neither. It is in the deceptoria complex.
Species you mentioned are much darker

Theo
 
CedricMondy
#4 Print Post
Posted on 05-07-2021 09:09
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Location: Île-de-France (France)
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Thank you Theo! I will try to check which species of this complex are known to be present in France and see if it seems possible to go further.
Cédric
 
Zeegers
#5 Print Post
Posted on 05-07-2021 11:44
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Location: Soest, NL
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That makes snese, but you will find historic and conflicting opinions.
It has to be sorted out properly.

Theo
 
CedricMondy
#6 Print Post
Posted on 11-07-2021 14:15
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Location: Île-de-France (France)
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I'm afraid I am stuck with this one.

To my knowledge, only acutangula, deceptoria, atramentaria and umbratica are listed to be present in France. I tried using this key to sort things out, but with no luck.

I would discard acutangula because wing cell r4+5 is not with a short petiole.
I first discarded deceptoria because tergites 1+2 to 4 usually were not with a clear yellow posterior margin and more and less red lateraly.
I would also discard atramentaria because the body is not entirely black.

We also noticed that this specimen has crossed post-ocellar setae, do you think this can help in any way?

Otherwise, I will stay at Stevenia sp.

Thank for your help!

PS: there is also two species synonyms of Stevenia listed in France: Paykullia insularis and partenopea
Edited by CedricMondy on 11-07-2021 14:17
Cédric
 
Zeegers
#7 Print Post
Posted on 11-07-2021 16:55
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Location: Soest, NL
Posts: 19133
Joined: 21.07.04

It is deceptoria sl. no doubt but this might be a complex.
And you might have at least two, if valid, in France


Theo
 
Zeegers
#8 Print Post
Posted on 11-07-2021 16:55
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Location: Soest, NL
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So get specimens and get DNA results !,

Theo
 
CedricMondy
#9 Print Post
Posted on 11-07-2021 17:38
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Location: Île-de-France (France)
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Joined: 30.06.21

Thank you for the confirmation Theo. Unfortunately, I am afraid that DNA analyses are a bit beyond my means Wink But if someone is interested and I get again one of these, I would be happy to send the specimen.

Greetings!
Cédric
 
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