Dyschirius (Eudyschirius) tenuispinus
General description:
Geographic: NEA
Distribution: Native, New World. Canada – AB; USA – AZ, CO.
Common name: Thin-spined Discolored Beetle
Synonym: Dyschirius tenuispinus Lindroth, 1961:139
Biology:
Macrohabitat: Midlands to highlands, 693 – 2600 meters altitude, on the
prairies and in mountain meadows. Microhabitat: Adults are ground-dwelling on exposed
clay alluvium substrate, with grasses. Dispersal abilities: Macropterous, probably capable
of flight; slow runners, strong burrowers. Seasonal occurrence: Adults have been found in
April – August. Behavior: Adults are nocturnal, predaceous, and take cover during the day in
burrows they dig into the substrate. They are found in such burrows in dry cow dung. Adults
overwinter in the substrate.