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Diptera.info :: Identification queries :: Diptera (adults)
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Metallic.....muscid ?
Tony T
#1 Print Post
Posted on 03-09-2007 23:55
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Location: New Brunswick, Canada
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1 September 2007, NB, Canada. Length: 7.5mm
Seems too small for a Calliphorid, also could not see any setae on meron.
EDIT: I looked through the gallery and saw Nikita's image of Eudasyphora cyanicolor a species that occurs in NA; could this be the same species?
Tony T attached the following image:


[61.53Kb]
Edited by Tony T on 04-09-2007 02:49
 
Nikita Vikhrev
#2 Print Post
Posted on 04-09-2007 08:31
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Hi Tony.
Small and all-metallic looks more like Pyrellia. Also Neomyia may have not sharply curved M (N.nudissima).
Eudasyphora has setae on R1 ventraly. Has it yours?
Nikita
Nikita Vikhrev - Zool Museum of Moscow University
 
Tony T
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Posted on 04-09-2007 14:22
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Thanks Nikita.
Superimposed setae on base of wing (scanned from a book) that closely resembles my fly. Setae are larger than actual but position is accurate.
Tony T attached the following image:


[45.11Kb]
 
Tony T
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Posted on 08-09-2007 14:06
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Does this drawing help?
 
Nikita Vikhrev
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Posted on 08-09-2007 16:17
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Yes Tony.
I think that 3 short setae on radial node is ok, but I don't understand what 2 long setae out of wing membraine means. I regard its as some "artefact" (if not - I have no idea so far)
In this case - It isn't Eudasyphora without setae on R1
Neomyia has this setae till crossvein and usually sharply curved M
So, really looks like Pyrellia for me...
Nikita
Nikita Vikhrev - Zool Museum of Moscow University
 
Tony T
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Posted on 08-09-2007 19:19
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Thanks Nikita. My drawing is inaccurate, those 2 setae actually arise at the extreme lower border of the vein and not from the membrane.
Seems that there is 1 sp. in NA (Pyrellia cadaverina), 1 sp. of Neomyia (cornicina) and 3 spp. of Eudasyphora of which 1 (cyanicolor Zetterstedt) was originally described as a Pyrellia.
 
Nikita Vikhrev
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Posted on 08-09-2007 19:44
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N.cornicina has prst ac, your fly hasn't.
Fits ok with Pyrellia cadaverina
Nikita
Nikita Vikhrev - Zool Museum of Moscow University
 
Stephane Lebrun
#8 Print Post
Posted on 08-09-2007 20:35
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Pyrellia should have only one postsut. intra-alar, no ? I can see 2 ia here. Thus, R1 setulose + 2 ia -> Eudasyphora ?
Stephane.
 
Nikita Vikhrev
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Posted on 08-09-2007 21:26
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You are right Stephane, 2 post ia.
But in this case R4+5 has to be setulose till crossvein as in attached image.
Tony, please, check the wing again, setae on R4+5 may be not easy visible.
Nikita
Nikita Vikhrev attached the following image:


[92.72Kb]
Nikita Vikhrev - Zool Museum of Moscow University
 
Tony T
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Posted on 08-09-2007 22:53
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Nikita Vikhrev wrote:
You are right Stephane, 2 post ia.
But in this case R4+5 has to be setulose till crossvein as in attached image.
Tony, please, check the wing again, setae on R4+5 may be not easy visible.
Nikita


Sorry to have caused so much discussion, just wish I could reciprocate by helping with Palaearctic flies.
This specimen has setae on both dorsal and ventral surfaces of that vein almost all the way to the cross vein. I think you can see both sets of setae on the enlargemenrt of the dorsal wing.
Also including, for my future reference, an enlargement of the thorax to show the 2 postsutural intralar setae (and their shadows).
Tony T attached the following image:


[105.73Kb]
 
Susan R Walter
#11 Print Post
Posted on 09-09-2007 11:43
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Fantastic - I am so impressed with the discussion and the photos here. Well done to all involved.
Susan
 
http://loirenature.blogspot.com/
Stephane Lebrun
#12 Print Post
Posted on 09-09-2007 12:53
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Don't be sorry Tony, I think this kind of discussion is very instructive.
Your photos would be deserving of figuring in a good book on Muscidae !

In conclusion, I think we can say Eudasyphora.
Stephane.
 
jorgemotalmeida
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Posted on 09-09-2007 13:21
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I think that would be a good idea to create a special section called STICKY threads.. for those that have very interesting posts like this one!
 
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Tony, I HAD a blank in the file name. Sorry!

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