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Diptera.info :: Family forums :: Syrphidae
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Shiny black Cheilosia
pierred
#1 Print Post
Posted on 26-05-2016 14:57
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Location: Paris (France)
Posts: 1437
Joined: 21.04.05

Hello,

www.galerie-insecte.org/galerie/image/dos162/big/5db19745.jpg
Pierre Duhem : France : Saint-Mitre-les-Remparts : 13920 : 08/05/2016
Altitude : 53 m - Taille : 8-9 mm
Réf. : 162853

I had initially thought it was C. pagana, because of the orange antennas, but another member of our French forum thinks it is C. sorror. The antennas of this later species are indeed smaller and rounder.

What do you think about it?
Thanks in advance.
Edited by pierred on 17-06-2016 08:44
Pierre Duhem
 
piros
#2 Print Post
Posted on 26-05-2016 18:19
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Location: Szeged, Hungary
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Can C. scutellata be ruled out?
Greetings,
Henrik
 
pierred
#3 Print Post
Posted on 26-05-2016 20:33
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Hi Piros,

I don't know.
Pierre Duhem
 
pierred
#4 Print Post
Posted on 29-05-2016 08:28
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I believe that the third antenna segment of C. scutellata is brown.
Pierre Duhem
 
Ectemnius
#5 Print Post
Posted on 16-06-2016 23:16
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Location: The Netherlands
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Hello pierred and piros,

Humeri and tip of scutellum are orange so scutellata group, excluding the possibility of C. pagana. Red antennae -> Cheilosia sorror.

Greetings,

Ectemnius
 
pierred
#6 Print Post
Posted on 17-06-2016 08:44
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Ectemnius,

Thanks for those criteria.
Pierre Duhem
 
pierred
#7 Print Post
Posted on 17-06-2016 16:03
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I'm afraid I don't understand what you said. According to van Veen, C. scutellata is member of the C. pagana group, isn't it? What is your conclusion?
Pierre Duhem
 
Ectemnius
#8 Print Post
Posted on 17-06-2016 16:39
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Location: The Netherlands
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Hi pierred,

The scutellata group (I thought there was something like that, but it might be just something I made up awkward) is artificial just like the pagana group. I referred to the scutellata group as the species with yellow humeri and top of scutellum. Those being in North-West Europe C. scutellata, C. sorror and C. longula. Of those three only C. sorror has a bright red third antennae segment.

Greetings,

Ectemnius
 
pierred
#9 Print Post
Posted on 17-06-2016 21:13
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Location: Paris (France)
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Thanks for taking the time to comment.
I must confess that I'm completetly lost.
Pierre Duhem
 
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