SeasonalityThe only Alberta specimen was collected in September.
IdentificationThis species, in the subgenus Carabus, is a European introduction. Black, upper surface and prosternum usually with rather dull brassy, sometimes greenish lustre. More slender than C. meander, with longer antennae and legs. The elytral sculpture is almost identical, except that a sutural ridge, inside the first row of tubercles, is at least suggested basally. Prothorax more pronouncedly square, with more broadly flattened sides. The elytral margin is not serrate behind the shoulders. Length 16 to 24 mm.