Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada

Tribe Carabini

Calosoma peregrinator Calosoma with rounded pronotum - Calosoma affine Calosoma scrutator Carabidae, Caterpillar Hunter - Calosoma wilcoxi Calosoma (Calodrepa) scrutator (Fabricius, 1775) - Calosoma scrutator - male Beetle to black light - Calosoma scrutator Carabus... - Carabus nemoralis Worm and Slug Hunter Beetle  - Carabus nemoralis
Classification
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
Numbers
3 genera with ~900 spp. worldwide (of which one extremely large but mostly Palaearctic), all represented in our area (ca. 55 spp.)(1)
Identification
The key below is adapted from(2)
Antennal segments 2 and 3 carinate (ridged). Mandibles with transverse rugosities, at least basally. Elytra with humeri well developed, wings well developed. Metepimeron longer than wide.---> Calosoma, Callisthenes
Antennal segments 2 and 3 cylindrical, not carinate (ridged). Mandibles smooth or finely punctate. Wings reduced, humeri sloping. Metepimeron wider than long or as wide as long. ---> Carabus

Compare mandibles, antennae of Carabus vinctus and Calosoma sayi:
Internet References
(3)