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|Combination in Proformica: Emery, 1912f PDF: 100; in Formica (Proformica): Wheeler, 1913i PDF: 539; in Formica: Francoeur, 1973 PDF: 114.|
|Subspecies of Formica fusca: Wheeler, 1908k PDF: 409; of Formica neogagates: Wheeler, 1913i PDF: 539.|
Found most commonly in these habitats: 3 times found in pine/fir woodland, 0 times found in Ponderosa pine forest, 5 times found in coastal scrub, 0 times found in Meadow, 0 times found in Mixed-canyon forest, 4 times found in subalpine meadow, 2 times found in coastal pine woodland, 2 times found in pine/fir forest, 2 times found in pine/oak woodland, 0 times found in Mixed canyon forest, ...
Found most commonly in these microhabitats: 29 times under stone, 13 times nest under rock, 9 times foragers, 7 times ground foragers, 4 times strays, 1 times nest in dead lupine root, 2 times under stones, 1 times under 1" of soil and grass pressed against slab, Solenopsis nest, Myrmica worke times steep, open grassland with scattered pines. 1550, 2 times on ground, 2 times nest under stone, ...
Collected most commonly using these methods: 77 times search, 30 times hand collecting, 1 times under rock, 7 times Bay Area Ant Survey (BAAS), 2 times in pitfall trap, 1 times hand coll., 2 times Davis sifter, 0 times Under log, 0 times Sandy roadside, 0 times Grass hummock, 0 times Nest in dirt mound with rocks, ...
Elevations: collected from 5 - 3420 meters, 1515 meters average