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Photo#876696
Syrphid Fly - Dasysyrphus laticaudus

Syrphid Fly - Dasysyrphus laticaudus
Edmundston, Madawaska County, New Brunswick, Canada
June 3, 2013
Size: 5,3mm
Genus Dasysyrphus?

Images of this individual: tag all
Syrphid Fly - Dasysyrphus laticaudus Syrphid Fly - Dasysyrphus laticaudus Syrphid Fly - Dasysyrphus laticaudus

Moved
Moved from Dasysyrphus.

Moved
Moved from Syrphini.

Dasysyrphus looks good to me.
Apparently, there's not much chance for species IDs on this genus.

 
Fortunately, we have a recent
Fortunately, we have a recently published key for Dasysyrphus - this keys out to D. laticaudus.

The fact that the maculae on tergites 3-4 don't reach the abdominal edge rules out venustus, limatus, and the intrudens species complex. The dark gena and abdominal markings rule out creper, lotus, and richardi (as does the location). The shape of the pattern on sternite 2 (thanks for the upside down pic!) and location rule out pinastri. The maculae not being constricted rules out amalopis and occidualis. Light profemur rules out nigricornis. Range rules out pauxillus and pacificus.

On this female, I can somewhat see the outer edges of the maculae on tergite 2 extending forward and reaching the abdominal edge, which is a key characteristic for D. laticaudus.

 
Thanks so much Kelsey for all
Thanks so much Kelsey for all these explanations..

 
Thanks Ron..
Thanks Ron..