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

Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

National Moth Week was July 23-31, 2022! See moth submissions.

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

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

Photos of 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

Previous events


Species Calosoma scrutator - Fiery Searcher

big green beetle - Calosoma - Calosoma scrutator Bright Metallic Green - Calosoma scrutator Fiery Searcher - Calosoma scrutator Calosoma scrutator - male Fiery Searcher - Calosoma scrutator Calosoma scrutator (Fiery Searcher) - Calosoma scrutator Calosoma scrutator - male Fiery - Calosoma scrutator
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Adephaga (Ground and Water Beetles)
Family Carabidae (Ground Beetles)
Subfamily Carabinae
Tribe Carabini
Genus Calosoma (Caterpillar Hunter Beetles)
No Taxon (Subgenus Calodrepa)
Species scrutator (Fiery Searcher)
Other Common Names
The Searcher; Caterpillar Hunter
Explanation of Names
Calosoma scrutator (Fabricius 1775)
25-35 mm
Large; elytra bright green with red/gold border; pronotum purple. C. wilcoxi is very similar but smaller (18-26 mm)
e US to CA (w.ME-ON-ND to FL-CA) to Venezuela; only strays in NS-QC(1)
Open areas (fields, gardens, orchards), often near deciduous forests
Adults and larvae prey on caterpillars. Adults will climb trees in search of their prey.
Life Cycle
Life cycle is one year, but adults long-lived, reported to live for up to three years. Adults attracted to lights. Eggs are laid singly in soil. Larvae pupate in earthen cells. Adults can overwinter.
See Also

scrutator vs. wilcoxi, scrutator
Print References
Works Cited
1.Catalogue of Geadephaga (Coleoptera, Adephaga) of America, north of Mexico
Bousquet Y. 2012. ZooKeys 245: 1–1722.
2.How to Know the Beetles
Ross H. Arnett, N. M. Downie, H. E. Jaques. 1980. Wm. C. Brown Publishers.
3.Ground Beetles and Wrinkled Bark Beetles of South Carolina
Janet Ciegler. 2000. Clemson University.
4.Peterson Field Guides: Beetles
Richard E. White. 1983. Houghton Mifflin Company.