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
Upcoming Events

Registration is open for the 2024 BugGuide gathering in Idaho July 24-27

Moth submissions from National Moth Week 2023

Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

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


Previous events
TaxonomyBrowseInfoImagesLinksBooksData
Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Flies (Diptera) » Orthorrhapha » Asiloidea » Robber Flies (Asilidae) » Stenopogoninae » Scleropogon » Scleropogon duncani
Photo#259662
Asilid on Saltbush - Scleropogon duncani - female
Copyright © 2009 Lynn Monroe

Asilid on Saltbush - Scleropogon duncani - Female
Anza-Borrego Desert State Park, San Diego County, California, USA
May 25, 2005
Size: BL about 22-23 mm
Another handsome elongate asilid, found perched on Saltbush at Yaqui Well. Again, the closest I can come is a Stenopogon. Any help is much appreciated!
tag · login or register to post comments
Contributed by Lynn Monroe on 20 March, 2009 - 3:54pm
Last updated 20 March, 2009 - 8:35pm

Beautiful shot
Of this robber.
… Herschel Raney, 21 March, 2009 - 9:45am login or register to post comments

Another Scleropogon duncani (
Another Scleropogon duncani (female); looks darker than the previous individual but must be same (nothing else quite like it in S. Calif.).
… Eric Fisher, 20 March, 2009 - 7:40pm login or register to post comments

 
Scleropogon duncani (female)
thanks for the identification, Dr. Fisher. It's great to have both the male and female of the species, because I do see some differences -- the male seems more elongate (more or longer abdominal segments) and has a red appendage.
… Lynn Monroe, 21 March, 2009 - 12:45pm login or register to post comments

 
Glad to help Lynn. Typically
Glad to help Lynn. Typically the females of S. duncani would have some red at the tip of the abdomen (though less than in the males). Also, the femora are more reddish ventrally (in both sexes) - which is why I mentioned that this individual seemed darker in color.
… Eric Fisher, 21 March, 2009 - 4:05pm login or register to post comments

 
Scleropogon duncani female
I appreciate your clarification of the traits to look for. The two robberflies were photographed at quite different sites and habitats. The female was at about a thousand feet higher elevation. Sometimes the low desert individuals are lighter. Thanks again.
… Lynn Monroe, 21 March, 2009 - 5:38pm 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 © 2003-2024 Iowa State University, unless otherwise noted.

Bugguide is hosted by:

Plant Pathology, Entomology and Microbiology at Iowa State University logo

Printer Friendly Version 		Terms of Use
Privacy Statement
Site Map
Contact