Carabidae, Coleoptera, Insecta, Arthropoda, Animalia
Matthew Denton, The Evergreen State College, Olympia, WA 98505 USA.
01 April 1997
|Key to spp. | species list | genus key |
Identification
Species are medium sized (7-15 mm). Distinguished from Pterostichus by non-crossed elytral epipleura at apex; serrate or denticulate claws. Elytra with at least two dorsal punctures on the third interval; tarsi glabrous above and with a more or less pronounced external longitudinal ridge.
Range
Holarctic.
Natural History
Species of Calathus occur on dry or moderately moist, usually open ground. Species vary in whether they hibernate as larvae, adults or both.
1a Both third and fifth elytral intervals with dorsal punctures. Basal fovea of prothorax coarsely punctate C. fuscipes
1b Only third interval with dorsal punctures. Prothorax impunctate or with fine, sparse punctures at base. C. grandicollis
References
Kavanaugh, D. H. 1992. Carabid beetles (Insecta: Coleoptera: Carabidae) of the Queen Charlotte Islands, British Columbia. Memoirs of the California Academy of Sciences Number 16. California Academy of Sciences, San Francisco, California, USA.
Lindroth, C. H. 1961-1969. The ground beetles (Carabidae excl. Cicindelinae) of Canada and Alaska. Parts 1-6. Opuscula Entomologica xlviii + 1192 pp.
For information about this page: John T. Longino longinoj@evergreen.edu
Last modified: 04/01/1997