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Photo#104723
Dune flies... - Lasiopogon littoris - male - female

Dune flies... - Lasiopogon littoris - Male Female
Oso Flaco Dunes Preserve, San Luis Obispo County, California, USA
April 13, 2007
Length of the pair is ~ 15 mm. Seem to be superficially similar to Asilidae, but I can't seem to figure out where they "belong". I'm adding a cropped image of what may be the female.
P.S. Another specimen of the same species, same location, same date, was identified by Eric Fisher as Lasiopogon (see here: 1 ).

Images of this individual: tag all
Dune flies... - Lasiopogon littoris - male - female Dune flies... - Lasiopogon littoris Dune flies... - Lasiopogon littoris

Moved
Moved from Lasiopogon.

Moved
Moved from Robber Flies.

Asilidae.
I would agree these are some kind of robber fly.

 
Thanks, Eric!
I had gotten distracted by the two Therevids (Nebritus sp. and Tabuda planiceps ) found at Oso Flaco. But in the present photo we can see the depression between the eyes, which the Stiletto flies lack. Also, I just remember having taken a frontal photo of a single fly of this species, in which the "beard" can be seen, as well as an unknown prey species (see 1 ).
Very small robber flies, but then there's very small prey.

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