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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Flies (Diptera) » Orthorrhapha » Asiloidea » Robber Flies (Asilidae) » Asilinae » Giant Robber Flies (Promachus) » Promachus princeps
Photo#61692
white tailed robber fly - Promachus princeps
Copyright © 2006 tom murray

white tailed robber fly - Promachus princeps
Virginia City, Storey County, Nevada, USA
June 25, 2006
I didn't get a measurement, it looked good sized, but not huge.
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Contributed by tom murray on 5 July, 2006 - 10:03pm
Last updated 15 September, 2008 - 8:02am

Moved
Moved from Giant Robber Flies.
… Herschel Raney, 15 September, 2008 - 8:02am login or register to post comments

 
Thorax here looks to have brown pilosity dorsally
...would that indicate P. albifacies rather than P. princeps (which is described as having thorax w/ gray pilosity)?

See comments & links under post below:

 
… Aaron Schusteff, 21 July, 2016 - 3:30am login or register to post comments

Robber
Probably a western Promachus species with that taillight Tom. But Fisher or Cannings may know this one.
… Herschel Raney, 6 July, 2006 - 7:30am login or register to post comments

 
It looks like
the P. albifacies I photographed last year in Colorado, or a closely related species. Thanks for the help Herschel!!
… tom murray, 6 July, 2006 - 5:48pm login or register to post comments

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