Dyschirius (Dyschiriodes) longulus
Geographic: NEA
Distribution: Native, New World. Canada – AB, BC, MB, NF, ON, SK, PQ; USA – MI, MN,
NY, PA, SD.
Commo name: Long Discolored Beetle
Synonym: Dyschirius longulus LeConte, 1850:204
Macrohabitat: Lowlands to midlands, sea level – 668 meters altitude, in grasslands,
alkali flats, wastelands, and at margins of snowfields. Microhabitat: Adults are eurytopic
and ground-dwelling on firm, moderately moist, sandy, gravelly or clayish substrate,
with some organic mix, and with short sparse vegetation (e.g. Agrostis ssp, Potentilla anserina,
etc.). They are neither riparian, nor very hygrophilus. Dispersal abilities: Wing-dimorphic:
Macropterous forms, capable of flight; brachypterous forms flightless, thus vagility limited to
walking or running; both forms slow runners and strong burrowers. Seasonal occurrence:
Adults have been found in April – August; probably a spring breeder. Behavior: Adults are
nocturnal, predaceous, and take cover during the day in burrows they dig into the substrate.
Adults fly to lights at night. Adults overwinter in the substrate.