Bembidion (Bracteon) carinula Chaudoir 1868

Common.

Adults of this species have been collected in June to September.

This species rages across the northern United States, and most of Canada. In Alberta this species is found in the central and south regions, and the extreme north-east corner of the the province.

Member of the inaequale group (subgenus Bracteon). Best recognized on the well-develpoed carina at hind angles of prothorax which runs parallel with side margin and reaches the base. Coppery or greenish, rarely bluish, mirrors of 3rd interval as a rule contrasting, in green specimens often coppery, and with adjoining intervals sometimes diffusely darkened. First antennal segment red, at least underneath; legs varying but femora always reddish at base (as a rule entirely), tibiae red to piceous, except at apex. Elytra with barely preceptible transverse impression at base and 4th stria straight, basal margin inside shoulder reaching 5th stria; 3rd interval hardly twice as broad as 4th on the level of anterior silver spot. Length 4.6 to 6.3 mm.

On barren banks and shores of slowly running or standing waters, on pure sand, sometimes coarse.

Overwinters in the adult stage.

Both larvae and adults are predatory.

Bembidion carinula is a species of ground beetle in the family Carabidae. It is found in North America.