Dyschirius (Paradyschirius) haemorrhoidalis
Geographic: NEA
Distribution: Native, New World. Canada – ON; USA – AL, AR, CT, DC, FL, GA, IA, IL,
IN, KS, KY, LA, MA, MD, MI, MO, MN, MS, NC, ND, NE, NH, NJ, NM, NY, OH, OK, PA,
RI, SC, SD, TN, TX, VA, WI, WV.
Common name: Red-tailed Discolored Beetle
Clivina haemorrhoidalis Dejean, 1831:511
Macrohabitat: Lowlands, sea level – 288 meters altitude, on margins of rivers,
brooks, pools and ponds, in cultivated fields (e.g., cotton, tobacco), and in urban area on
lawns near woodlots. Microhabitat: Adults are ground-dwelling on exposed moderately wet
or moist, bare clay substrate, sometimes mixed with silty sand. Dispersal abilities: Macropterous,
capable of flight; slow runner and strong burrowers. Seasonal occurrence: Adults
have been found in February – November; teneral adults in May and August; probably a
spring breeder. Behavior: Adults are nocturnal, predaceous, and take cover during the day in
burrows they dig into the substrate, or in substrate cracks. Adults repeatedly found at white
and UV lights at night and in sea shore wash-up; they are gregarious. Adults overwinter in the
substrate.