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

BugGuide is a National Moth Week Partner. How to add your National Moth Week 2021 photos. July 17-25.

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

National Moth Week 2020 photos of insects and people.

Photos of 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

Previous events

Tachys oblitus

Tachys oblitus
Stroud Preserve, Chester County, Pennsylvania, USA
June 14, 2015
Size: 2.61 mm.
This one I am not completely sure of. There is no key available that covers all of Pennsylvania's species. I adapted a key using Bousquet (2012) and Hayward (1900). I it doesn't include T. potomaca or T. rhodeanus as I can't get hold of the original descriptions or reference specimens. So, any suggestions or comments for this would be most welcomed.

Images of this individual: tag all
Tachys oblitus Tachys oblitus

Close-up suggests (?) pronotal mesh
so that would favor T. pumilus. Your scoping pronotum in lab will settle this matter.

If the options are T. oblitus
If the options are T. oblitus and T. pumilus then I would favor T. oblitus for both of the specimens that I have posted here. Sorry for the quality of the photos. It is really stretching the limits of what I am able to get with an iPhone with a little macro lens on it (I'm surprised that I can get any image at all with the tiny carabids). The micro sculpture on the pronotum on both specimens is striate, and similar to the micro sculpture on the elytra (as in Bousquet).

Okay -
you have it under control.

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