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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Beetles (Coleoptera) » Adephaga » Ground Beetles (Carabidae) » Tiger Beetles (Cicindelinae) » Blunt-lipped Tiger Beetles (Amblycheilini) » Night-stalking Tiger Beetles (Omus)
Photo#423987
Omus tularensis Casey, 1909 - Omus - male
Copyright © 2010 Dennis Haines

Omus tularensis Casey, 1909 - Omus - Male
Tule River, 5500' elevation, Tulare County, California, USA
May 29, 2010
Size: 17 mm
This species appears to be smooth to the naked eye, but under magnification you can make out very shallow dimples on the surface of the elytra. This is the smooth form of O. tularensis, a variable species at the southern end of the Sierra Nevada and Greenhorn Mtns. of Tulare and Kern Counties. The typical form has shallow, confluent punctures on the elytra
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Contributed by Dennis Haines on 9 July, 2010 - 3:44pm
Last updated 10 March, 2014 - 4:06pm

I collected similar Omus with
I collected similar Omus with extremely shallow dimples from Courtright Resevoir (Fresno County) last night. I am anxious to know what to call this and other Omus "californicus" in my collection. Good luck on your efforts.
… Jonathan W. Quist, 15 June, 2013 - 11:32pm login or register to post comments

 
Good one!
You've collected the true O. laevis. I've seen the larval burrows near the trailhead, but haven't gotten an adult yet from Courtright. The specimen I have pictured here has long been thought to represent O. laevis, and is frequently sited as such, but I believe it is a variant of the more common lower elevation Omus from the southern Sierra Nevada.
… Dennis Haines, 17 June, 2013 - 10:11am login or register to post comments

 
I wouldn't second guess it. T
I wouldn't second guess it. The six or so populations of Omus californicus I've taken from all differ in some way or another. Thanks for the info! Would this be a new guide page-worthy finding?
… Jonathan W. Quist, 17 June, 2013 - 6:58pm login or register to post comments

 
You photograph...
it, and I'll identify it as O. laevis. Important characters are on the head (shape of the labrum and # of setae at the edge of the eyes), and of course the smooth elytra.

Send me your locales in an e-mail and I'll see what I can make of them. Give you some idea what you might have.
… Dennis Haines, 17 June, 2013 - 7:16pm login or register to post comments

Moved
Moved from Smooth Night-stalking Tiger Beetle.
… Dennis Haines, 4 June, 2013 - 12:01pm login or register to post comments

Omus sp.
While this population has long been considered to represent Omus laevis, that conclusion was based on the smooth elytra alone. Hopefully my work on the genus will straighten out where this one belongs.
… Dennis Haines, 4 June, 2013 - 11:59am login or register to post comments

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