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 about 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

Carabus - Carabus taedatus - female

Carabus - Carabus taedatus - Female
Glenwood, Klickitat County, Washington, USA
June 18, 2011
Size: 20mm
Found this completely black Carabus near pine forest under a log. My best guess is Carabus taedatus, but I have never seen this species before. Need a confirmation.

Images of this individual: tag all
Carabus - Carabus taedatus - female Carabus - Carabus taedatus - female Carabus - Carabus taedatus - female

looks good; will have it checked
Moved from ID Request.

Thanks a lot, v

from Jim Labonte:
"Presuming the image accurately reflects the coloration and surface texture of the specimen, I'd definitely go with C. taedatus. In general, if a specimen from around here is all black, with no hint of metallic reflections or copper/purple/red/green hues and has a dull surface, that's C. taedatus: C. nemoralis is always shiny with metallic reflections and hues. Other characteristics are shorter and narrower posterior pronotal angles (the pronotum itself is substantially narrower than in C. nemoralis) and much more distinctly ovate elytra that are much narrower anteriorly than at the widest point. The interstriae between the foveate interstriae are thinner, more linear, and less interrupted than in C. nemoralis. As I recall, Gay Hunter Edelbrock raised at least several of the subspecies to full species rank in her thesis, but I don't believe that information has been published and thus the status quo is that everything treated in Hatch as C. taedatus remains that way.
"I've found this to be a sporadically common species in the Puget Trough and Willamette Valley and quite common east of the Cascades."

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