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Photo#877016
Flesh Fly - Sarcophaga

Flesh Fly - Sarcophaga
Edmundston, Madawaska County, New Brunswick, Canada
May 19, 2013
Size: 11,7mm

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Flesh Fly - Sarcophaga Flesh Fly - Sarcophaga Flesh Fly - Sarcophaga

How did you ID it to genus?

 
Here is how I came to it..
Here is how I came to it..
Arachnidomyia is only present on pacific coast.
Boettcheria only pesent near Florida,
Oxysarcodexia wich is present near the Great Lakes have the last segement of abdomen orange.
Ravinia which is also prensnt near the Great Lakes have a large rectangular black band on top of head
Sarcophaga also have that large black band, but with a V shape, and that genus is largely present in Maine, Quebec and Atlantic provinces.
I would like to have the scientific term to better explain these are quite complicate to me.

 
Postalar wall
Since you removed a wing you can photograph the postalar wall, which the key to genera depends on.

 
Boettcheria is widespread
Boettcheria is widespread. I have seen one in New York, for example. Compare the rows of bristles along the frons to possible genera; genus ID depends on whether they end above or beside the antenna and whether they are straight or turn an angle at the bottom end.

 
I have included a closeup of
I have included a closeup of the bristles along the frons.. as for the postalar wall, if I would exactly what to look for, I would be happy to have a closeup photo of it..

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