Size: 13-15mm Basic colour: Shiny black Pronotoum: Sides rather straight and converging to rounded hind angles; foveae deep and well delimited externally. Leg colour: Shiny black. Confusion species: Pterostichus aethiops , Confusion species: Pterostichus madidus
Biology
Status: Not recorded from Britain since 1973; widespread but very local in Ireland. RDB Category: Endangered Habitat: Wet humus in fens and bogs. Other notes: Tarsal claw joints without ventral setae. Head with deep, curved frontal furrows anteriorly. Elytra parallel-sided, striae finely punctured, outer striae very faint; third interval with three or four deep fovate punctures. Wings present.
Size: 8-9.5mm Basic colour: Brown Pattern colour: Head red-brown, elytra dark black-brown with an elongate pale area covering most of intervals 3-6 except the extreme apices. Pronotoum: Red-brown. Densely punctured, not transverse, hind angles sharp but slightly obtuse. Leg colour: Pale brown.
Biology
Status: Declining. Local and usually coastal in the extreme south and east of England. RDB Category: Vulnerable Habitat: Cracks and crevices, usually in clay soils or cliff bases but also on sandy or gravelly soils. Other notes: Dorsal surface flat and pubescent throughout. Antennae entirely pubescent, basal segment wider than the remainder. Tarsal claws not toothed. Head sparsely but very strongly punctured; strongly contracted behind the protruding eyes, which have a strong row of curved hairs behind. Elytra densely punctured, intervals flat; apices transversely truncate. Wings present.