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) » Ants, Bees, Wasps and Sawflies (Hymenoptera) » "Parasitica" - Parasitoid Wasps » Chalcidoid Wasps (Chalcidoidea) » Chalcidid Wasps (Chalcididae) » Cratocentrinae » Acanthochalcis » Acanthochalcis nigricans
Photo#581902
Acanthochalcis nigricans
Copyright © 2011 margarethe brummermann

Acanthochalcis nigricans
Montosa Cny, Santa Cruz County, Arizona, USA
September 20, 2011
Size: 28mm
tag · login or register to post comments
Contributed by margarethe brummermann on 28 September, 2011 - 1:36pm
Last updated 30 December, 2021 - 9:07pm

Moved
Moved from Acanthochalcis unispinosa.
… Brad Barnd, 30 December, 2021 - 9:07pm login or register to post comments

Moved
Moved from Acanthochalcis.
… Jonathan Hoskins, 11 December, 2021 - 2:12am login or register to post comments

 
Acanthochalcis nigricans
The white tuft on the side of the thorax and the silvery-white hairs on the upper surface of the femur are absent in A. unispinosa. Margarethe states that the white tufts are present on the abdomen. A. nigricans is the dominant species in Arizona and quite common. The angle and lighting are what's giving you problems.

I reviewed 40 specimens of A. unispinosa and 30 A. nigricans for this determination.
… Dennis Haines, 13 December, 2021 - 9:55am login or register to post comments

Moved
Moved from ID Request.
… John S. Ascher, 29 September, 2011 - 5:18pm login or register to post comments

-
Per a chalcidologist friend,this is definitely Acanthochalcis, but he believes the species is probably unispinosa.
… Bob Carlson, 28 September, 2011 - 7:51pm login or register to post comments

 
Its a beautiful shot...
but I wish it were turned just a little more to the side. A. nigricans has the white tufts of setae on the sides of the abdomen, while A. unispinosa does not. I have collected both, but nigricans is more common in AZ.
… Dennis Haines, 17 October, 2013 - 5:16pm login or register to post comments

 
I collected one this year
that is huge and has the tufts.
… margarethe brummermann, 17 October, 2013 - 11:14pm login or register to post comments

Yes...
You're in a good place, because these have only been found in arid areas of the southwest.

See reference here.
… Ross Hill, 28 September, 2011 - 7:26pm 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