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Stout fly - Eristalis dimidiata

Stout fly - Eristalis dimidiata
Patuxent NWR North Tract, Anne Arundel County, Maryland, USA
October 15, 2016
Eristalis sp.?

Moved from Syrphid Flies.

Eristalis dimidiata .....male
Eristalis dimidiata .....male
Cell before humeral cross-vein dark brown-black:
No bluish reflections, lack of dark wing spot or any infuscation and just about able to see black pterostigma rules out E.saxorum, which is very rare and is the only other species with cell before humeral cross-vein dark brown-black.

Moved from Flies.

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