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Found most commonly in these habitats: 6 times found in coniferous forest, 6 times found in Aspen-lodgepole pine forest, 6 times found in Black oak dunes, 3 times found in sparse conifer woods, 5 times found in Deciduous shrub, 5 times found in Mixed montane forest, 3 times found in meadow edge in conifer forest, 3 times found in Deciduous thicket, 3 times found in mixed hardwood forest, 1 times found in meadow in forest, ...
Found most commonly in these microhabitats: 8 times under rock, 4 times under stone, 5 times under boulder, 1 times nest in dead wood, 3 times log stage 4, 3 times under thatched wood, 2 times foragers, 2 times under stick, 2 times under log, 1 times under dead sage stem, 1 times thatch mound, ...
Collected most commonly using these methods: 14 times search, 1 times hand collecting, 1 times direct collection, 1 times hand collected, 1 times sweeping.
Elevations: collected from 450 - 3048 meters, 1970 meters average
Type specimens: Paratype: fmnhins0000062711, fmnhins0000062712, fmnhins0000062713; syntype (?) of Formica truncicola obscuriventris: casent0915637; syntype of Formica obscuriventris: casent0911083; type of Formica truncicola var. obscuriventris: focol2745