Pterostichus pumilus
Pterostichus pumilus
Size: 6.7-9.5mm
Seasonality: March-September
Distribution; sw. BC, w. WA, w. OR, nw. CA
Information: two subspecies in our area: P.p.willamettensis and P.p.pumilus. Often found among forest floors in Pacific temperate rain forests, wet meadows, or forested areas along waterways.
Description: body: elongate-ovate, moderately robust. Body fully dark red in mature adults. Head triangular, face long; mostly smooth with two very long setae over each eye; clypeus rough, the front margin of the clypeus weakly rounded inward. Mandibles long, slender, sharply curved near apices; palpi pale; antennae dark reddish, antennal pubescence begins on the second antennomere following the pedicel. Eyes weakly bulging laterally, reduced somewhat. Pronotum rounded-rectangular; lateral bead encircles the entirety of the disk except for the front margin; median line strong, weak crack-like formations may be seen across the pronotum when viewed under a scope, disk smooth aside from the small indentation found on either side of the lower median bulge. Front angles obtuse, hind angles obtuse or squared, lateral margins rounded. Scutellum exposed; humeral shoulders obtuse, lateral margins round, as are the apices. 6-7 well-defined striae per elytron, intervals flat or weakly elevated; no additional elytral pubescence. Ventral and limb colouration often slightly darker than that of the dorsum.