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Photo#216202
Fly with wingflaps - Euthera tentatrix

Fly with wingflaps - Euthera tentatrix
Harvard, Worcester County, Massachusetts, USA
August 20, 2008
Size: about 5mm
This side view shows a pair of small black "winglets" sticking up from the base of the wings.

Images of this individual: tag all
Fly with wingflaps - Euthera tentatrix Fly with wingflaps - Euthera tentatrix

Moved
Moved from Euthera.

Moved
Moved from Tachinidae.

Moved
Moved from Flies.

Spoilers? Perhaps a fly version of the Road Runner Super Bee?
Quite unusual. I shot a syrphid this week with an indication of something like this, but only on one side.

 
Road Runner
Maybe those spoilers help this fly go supersonic:-)
It'll be interesting to hear what those things are.

 
the wingflaps
are calypters- extra lobes at the base of the wings. I do not know what purpose they serve. They are large in most Calyptrate (e.g.- w/calypter) flies, and generally small or absent in Acalyptrate (no calypter) flies. They can also be seen in syrphids, etc.

 
Keith
Thanks for the answers about the calypters. I learned a new word today:-)

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