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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Beetles (Coleoptera) » Adephaga » Ground Beetles (Carabidae) » Carabinae » Carabini » Caterpillar Hunter Beetles (Calosoma) » Subgenus Callitropa (Calosoma Subgenus Callitropa) » Narrow Searcher (Calosoma externum)
Photo#588738
Calosoma externum - Narrow Searcher - Calosoma externum
Copyright © 2011 Chris Barrigar

Calosoma externum - Narrow Searcher - Calosoma externum
Bloomfield - Residence, Stoddard County, Missouri, USA
October 11, 2011
Size: ~27 mm
I'm sure this is a very common beetle. I have just never noticed the extent of blue on the outer edge of it. It was observed initially feverishly running away from a Woolly Bear Caterpillar carcass . . . it's what they do!
Contributed by Chris Barrigar on 20 October, 2011 - 7:56am

Moved tentatively; very nice!
Chris, if they are indeed common in your area, please try to take & post more pix: we've only had a single submission of this species so far [from NC], and yours is BG's very first live photo of this impressive bug.
thanks!
Moved from ID Request.
… v belov, 20 October, 2011 - 8:39am

 
congratulations--a bit late
For the record, my specimen from 2004 was live, but chilled, as it would not hold still otherwise:


I have always wondered why there were so few records on BugGuide--it took seven years to get another one after mine, and I have never seen another. I just happened across mine in my woodsy suburban yard, so it is not like it was an unusual habitat. Perhaps some pit trapping or other appropriate technique would turn up more. A real puzzle!
… Cotinis, 24 April, 2016 - 11:10pm

searcher
Calosoma externum or a species of calosoma (unless the genus has been changed to Callisthenes )
… wolfpacksved, 20 October, 2011 - 8:07am

 
Calosoma externum - Narrow Searcher
Awesome! Thanks!
… Chris Barrigar, 20 October, 2011 - 8:24am

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