Comprehensive Description

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Biology

Macrohabitat: Lowlands to midlands, 6 – 640 meters altitude, on the tundra
in tussocks, on mossy substrate under willows (Salix spp.), and in Alnus thickets. Microhabitat:
Adults are ground-dwelling and less hygrophilus than those members of D. arctica. They
usually inhabit peaty substrate on the open tundra, as well as occurring at the margin of Carex
pools on moist soft substrate, but also sometimes on rather dry places with Betula nana exilis
(Sukatschev) Hultén, Vaccinium sp, Rubus chamaemorus L, Carises, and mosses. Dispersal abilities:
Macropterous, probably capable of flight. Seasonal occurrence: Adults have been found in June – September. Behavior: Adults are nocturnal, predaceous; they take cover during
the day in leaf litter, or under stones. Adults hibernate.

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© Erwin, Terry

Source: Western Hemisphere Caraboidea

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