|scientific name Pterostichus pensylvanicus |
Among dead leaves and moss under bushes of alder, etc., usually on gravelly soil.
Adults collected May to September.
Member of the adstrictus group, (subgenus Bothriopterus). Closely allied to P. adstrictus but at once recognized on the body proportions; the elytra are both shorter and narrower as compared with the prothorax and have more rounded sides. The bronzy luster is usually more pronounced, visible also in the female, in which the leytra are less dull; the legs are paler, notably the tibiae are more clear brown. Prothoax more convex, sides rounded to hind angles, lateral depression hardly widened basad; the convexity separating basal fovea from side margin more pronounced, being a direct continuation of the disc. Elytral striae usually stronger, more or less evidently punctulate, intervals as a rule somewhat convex; dorsal punctures as well as those of 8th stria somewhat less foveate. Antennal cleaner of fore-tibia with 2 clip setae. Length 9.5 to 12 mm.
No information available.
Both larvae and adults are predatory.
This species is recorded from the northern part of United States, and most of Canada. In Alberta this species has been collected in the central region and also in the extreme southwest corner.
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