Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Upcoming Events

Information, insects and people from the 2019 BugGuide Gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

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


Species Promachus vertebratus

Robberfly species? - Promachus vertebratus Robber Fly - Promachus vertebratus - female Promachus sp? - Promachus vertebratus Robberfly - Promachus vertebratus Giant Robberfly (Asilidae: Promachus or Diogmites)? - Promachus vertebratus  Robber Fly with Prey - Promachus vertebratus Promachus Vertebratus ? - Promachus vertebratus - male - female 12Jul2017.cowfarmponds.HN.Dip1 - Promachus vertebratus - male
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