Dyschirius (Dyschiriodes) nigricornis
General description:
Geographic: NEA
Distribution: Palearctic, New World. Canada – NT, YK; USA – AK.
Synonyms: Dyschirius nigricornis Motschulsky, 1844:82
Dyschirius septentrionum Münster, 1923:248
Dyschirius secretus Fall, 1926:130
Dyschirius septentrionis Lafer, 1989:133
Biology:
Distribution: Palearctic, New World. Canada – NT, YK; USA – AK.
Way of Life: Macrohabitat: Lowland to midlands, 200 – 950 meters altitude, on the tundra
in mosses and leaf litter. Microhabitat: Adults are ground-dwelling. Dispersal abilities: Macropterous, probably capable of flight; slow runners, strong burrowers. Seasonal occurrence:
Adults have been found in June – August. Behavior: Adults overwinter in the
substrate.