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

Register · Log In
HomeGuideID RequestRecentFrassForumsDonateHelp
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

Calendar
BugGuide Gathering
Smoky Mountains
University of Tennessee Biological Field Station
August 8-10, 2008
 
Photos from the gathering
 
Photos from the 2007 gathering in Minnesota

TaxonomyBrowseInfoImagesLinksBooksData
Home » Guide » Arthropods (Arthropoda) » Insects (Insecta) » Flies (Diptera) » "Orthorrhapha" (Brachycera excluding Aschiza and Schizophora) » Asiloidea » Robber Flies (Asilidae) » Asilinae » Efferia » Nerax group (Efferia Nerax group) » Efferia aestuans
Photo#70687
Robber Fly - Efferia aestuans - male
Copyright © 2006 John Fox

Robber Fly - Efferia aestuans - Male
Arlington County, Virginia, USA
August 14, 2006
Size: ~1"
I seldom can ID a new Robber but this looks pretty good. New for me and the state.
tag · login or register to post comments
Contributed by John Fox on 14 August, 2006 - 10:27am

Efferia
Yes, one of the three commonest robbers out there and far and away the most submitted in the east. Though males less commonly than females.
… Herschel Raney, 14 August, 2006 - 2:26pm login or register to post comments

 
Three commonest robbers
I assume the second one is Diogmites neoternatus, which I've seen several times. What's the third?

Thanks
… John Fox, 14 August, 2006 - 3:27pm login or register to post comments

 
Common
The large Promachus species are dominant in much of the south: P hinei and rufipes. The Diogmites can be locally abundant. But Triorla interrupta is the other very common species in the south and east.
… Herschel Raney, 14 August, 2006 - 9:18pm login or register to post comments

Comment viewing options
Select your preferred way to display the comments and click 'Save settings' to activate your changes.

Disclaimer: Dedicated naturalists volunteer their time and resources here to provide this service. We strive to provide accurate information, but we are mostly just amateurs attempting to make sense of a diverse natural world. If you need expert professional advice, contact your local extension office.

Contributors own the copyright to and are solely responsible for contributed content.
Click the contributor's name for licensing and usage information.
Everything else copyright © 2003-2008 Iowa State University, unless otherwise noted.

Bugguide is hosted by Iowa State University Entomology.

Printer Friendly Version 		Terms of Use
Privacy Policy
Site Map
Contact