Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
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Upcoming Events

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa

Photos from the 2010 Workshop in Grinnell, Iowa

Photos from the 2009 gathering in Washington


Species Promachus vertebratus

Robber Fly - Promachus vertebratus Promachus sp? - Promachus vertebratus Robberfly - Promachus vertebratus Green-Eyed Robber Fly - Promachus vertebratus Unknown Robber Fly, possible Promachus bastardi. - Promachus vertebratus - female  Robber Fly with Prey - Promachus vertebratus Robber fly - Promachus vertebratus Promachus Vertebratus ? - Promachus vertebratus - male - female
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon (Orthorrhapha)
Superfamily Asiloidea
Family Asilidae (Robber Flies)
Subfamily Asilinae
Genus Promachus (Giant Robber Flies)
Species vertebratus (Promachus vertebratus)
Explanation of Names
Promachus vertebratus (Say 1823)
Green eyes, sometimes with some red.
PA-MN-SD south to MO-OK-CO(1)
Open grasslands including disturbed areas.
Internet References