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Diptera.info :: Identification queries :: Diptera (adults)
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Mycetophilidae in the bois de Boulogne
pierred
#1 Print Post
Posted on 22-04-2017 08:57
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Location: Paris (France)
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Hello,

www.galerie-insecte.org/galerie/image/dos181/big/5db26297.jpg
Pierre Duhem : France : Paris : 75016 : 20/04/2017
Altitude : 42 m - Taille : 12-15 mm
Réf. : 181177

www.galerie-insecte.org/galerie/image/dos181/big/5db26292.jpg
Pierre Duhem : France : Paris : 75016 : 20/04/2017
Altitude : 42 m - Taille : 12-15 mm
Réf. : 181178

I'm rather clueless for this specimen, pictured a few days ago in the bois de Boulogne (Paris).
Can somebody give me a direction?
Thanks in advance.
Pierre Duhem
 
Jan
#2 Print Post
Posted on 22-04-2017 21:42
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Looks like Grzegorzekia collaris
 
pierred
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Posted on 23-04-2017 07:25
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Thanks, Jan.

On the other hand, somebody told me that this should be a Sciophilinae, with the little square cell.
pierred attached the following image:


[35.45Kb]
Edited by pierred on 23-04-2017 08:01
Pierre Duhem
 
Jan
#4 Print Post
Posted on 24-04-2017 23:48
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Yes, but this is Grzegorzekia. Sciophilinae have macrotrichia on wing membrane and usually unspotted wings.
 
pierred
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Posted on 25-04-2017 07:07
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Thanks for the confirmation.
Pierre Duhem
 
John Carr
#6 Print Post
Posted on 25-04-2017 12:54
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The r-r crossvein means Sciophilinae in the traditional classification by Edwards. Most of Edwards' subfamilies are now considered families. The family Mycetophilidae is restricted to (Mycetophilinae + Sciophilnae sensu Edwards) and is often divided into about 8 subfamilies. At least 2 of the new subfamilies have the r-r crossvein.

I have also seen the crossvein called R2 and R4.
 
http://www.flickr.com/photos/31715949@N00
pierred
#7 Print Post
Posted on 25-04-2017 14:12
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Thanks for those comments.
Pierre Duhem
 
Jan
#8 Print Post
Posted on 29-04-2017 09:22
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The R4 cross vein is a widely distributed plesiomorphic character state across the subfamillies Mycomyiinae, Gnoristinae and Sciophilinae in the modern strict sense. But it is not present in all genera in any of these subfamilies.
 
pierred
#9 Print Post
Posted on 29-04-2017 11:35
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In understand better, now.
Thanks again.
Pierre Duhem
 
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