Pasimachus (Pasimachus) atronitens
Geographic: NEA
Distribution: Native, New World. México – CH, SO; USA – AZ, CO, NE, NM, TX.
Common name: Shining Black Warrior Beetle
Synonyms: Pasimachus atronitens Casey, 1913:89
Macrohabitat: Lowlands to mountains, 332 – 2256 meters altitude, on hilly
praires. Microhabitat: Adults are ground-dwelling on dry sandy substrate. Dispersal abilities:
Brachypterous, hence flightless therefore vagility limited to walking or running; moderate
runners, strong burrowers. Seasonal occurrence: Adults have been found in March – April,
and June – October. Behavior: Adults are nocturnal, predaceous, and take cover during the
day in burrows they dig in the substrate, under stones, or surface debris. In the northern part
of their range, adults overwinter in the substrate; in the southern part, they likely aestivate
during the dry season in the substrate.