Dyschirius (Dyschiriodes) pilosus
Geographic: NEA
Distribution: Native, New World. Canada – MB, NB, ON, PQ; USA – AL, CT, DC, IA, IL,
IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MT, ND, NE, NH, NY, OH, OK, PA, TX,
VA, VT, WI, WV.
Common name: Hairy Discolored Beetle
Synonyms: Dyschirius pilosus LeConte, 1857:80
Dyschirius hispidus LeConte, 1863:4
Macrohabitat: Lowlands to midlands, 1 – 600 meters altitude, on sandy banks
of rivers and brooks, shores of lakes and ponds, and on pool margins. Microhabitat: Adults
are ground-dwelling on exposed to partially shaded moist or wet clay substrate, bare or with
very sparse vegetation. Dispersal abilities: Macropterous, capable of flight; slow runners,
strong burrowers. Seasonal occurrence: Adults have been found in February – September;
teneral adults in late July – August; probably a spring breeder. Behavior: Adults are nocturnal,
predaceous, and take cover during the day in burrows they dig into the substrate, or under
stones and pieces of wood; they are gregarious. Adults are attracted to UV and white lights.
Populations of this species are associated with staphylinids (Bledius ssp.). Adults overwinter in
the substrate.