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|Senior synonym of Formica aggerans: Forel, 1914c PDF: 619; Creighton, 1940a PDF: 1; of Formica melanotica: Creighton, 1950a PDF: 492.|
Found most commonly in these habitats: 12 times found in shrub steppe, 8 times found in conifer forest, 17 times found in sagebrush, 5 times found in aspen forest, 8 times found in Shortgrass prairie, 8 times found in Pinyon-Cedar woodland, 5 times found in lodgepole pine forest, 4 times found in conifer forest edge, 3 times found in Pinus albicaulis open forest, 2 times found in alpine meadow edge, ...
Found most commonly in these microhabitats: 31 times thatch mound, 26 times thatched nest, 11 times thatch mound nest, 12 times under rock, 7 times mound nest, 3 times large Formica thatch mound, 5 times foragers, 3 times nest under dead wood, 3 times ex thatch mound, 5 times under stone, 4 times under dead wood, ...
Collected most commonly using these methods: 105 times search, 16 times hand collecting, 1 times pitfall, 0 times sweeping, 1 times Winkler, 1 times observation.
Elevations: collected from 5 - 3115 meters, 1611 meters average