Texas Beetle Information

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Fiery Searcher

Calosoma scrutator (Fabricius)

Family Carabidae, Tribe Carabini


Fiery Searcher - Calosoma scrutator (Fabricius)

Deep Fork National Wildlife Refuge
9 mi ne of Henryetta, Okmulgee Co., Oklahoma
April 17, 2003 (Charles Schurch Lewallen)

Also known as "Caterpillar Hunters"

Calasoma beetle larva eating Pipevive Swallowtail larva

Calosoma (below) eating a Pipevine Swallowtail larva

Lake Corpus Christi, San Patricio Co., Texas
November 9, 2006 (P Crispin)

Texas County Records for Calosoma scrutator

Fiery Searcher - Calosoma scrutator (Fabricius)

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Range: Occurs throughout United States and southeastern Canada (Arnett & Thomas, 2000).

Adult Activity: April to November, though most common during April and May. (Taber & Fleenor, 2003).


Adults of C. scrutator climb trees in search of prey, whereas the larvae remain on the ground. A number of Calosoma spp. are attracted to lights, on some evenings in great numbers. When disturbed, these beetles give off a distinctive, fetid odor. (Arnett & Thomas, 2000).

Similar Species

There are 170 species within Calosoma arranged in 22 subgenera. The 41 Nearctic species are arrayed in 10 subgenera (Arnett & Thomas, 2000).

Texas Taxa:

Calosoma affine Chaudoir 
Calosoma aurocinctum Chaudoir
Calosoma macrum LeConte
Calosoma marginale Casey 
Calosoma sayi (Dejean) 
Calosoma scrutator (Fabricius)
Calosoma wilcoxi LeConte

Weblinks: Ground Beetle - TAMU

PhotosAdult, Adult, Adult (close-up), Larva - BugGuide.Net


Arnett, R.H. Jr., & M. C. Thomas. (editors). 2000. American Beetles, Volume I: Archostemata, Myxophaga, Adephaga, Polyphaga: Staphyliniformia.
CRC Press. 464 pp.

Choate, P.M. 2001. Manual for the Identification of the Ground Beetles (Coleoptera: Carabidae) (including tiger beetles) of Florida. University of Florida, Gainesville. Pre-publication manuscript. 90 pp.

Taber, S.W. & S.B. Fleenor. 2003. Insects of the Texas Lost Pines. Texas A&M University, College Station. 283 pp.

White, R.E. 1983. A Field Guide to the Beetles of North America. Houghton Mifflin Company, Boston. 368 pp.

20 Jan 2008  © Mike Quinn / entomike@gmail.com / Texas Entomology / Texas Beetles / Texas Beetle Photos /