Elaphrus (Elaphrus) americanus sylvanus Goulet 1982
Geographic: NEA
Distribution: Native, New World. Canada – AB, BC; USA – CO, ID, OR, WA.
Common name: Forest Marsh and Bog beetle
Synonym: Elaphrus americanus sylvanus Goulet, 1982:2271
Macrohabitat: Lowlands to mountains, 17 – 3353 meters altitude, also in the
subalpine zone. microhabitat: Adults are ground-dwelling and occur on clay beach margins
of streams, ponds, marshes, bogs, and seepages, and at margins of snow fields. They can be
found on bare or covered substrate with patchy vegetation (e.g. in riparian habitats) on moist
organic substrate and on matted-vegetation. Dispersal Abilities: Macropterous, capable of
flight; swift runners. Seasonal occurrence: Adults have been found in April – August. Behavior:
Adults are diurnal, predaceous and are active in sunshine. In coastal Oregon, adults
were found on the saturated portion of clay beaches. The habitat is similar to that of E. californicus
except that adults run mostly on the saturated portion of the beach. However, in the
Cascades, adults of the subalpine form are found in many localities running around margins
of snow surfaces on bare organic substrate and on matted-vegetation. Adults stridulate; they
also hibernate.