|Senior synonym of Leptothorax canadensis, Leptothorax kincaidi, Leptothorax septentrionalis, Leptothorax yankee (and its junior synonyms Leptothorax obscurus, Leptothorax sordidus): Brown, 1955a: 47; of Leptothorax betulae, Leptothorax fagi, Leptothorax flavescens: Radchenko, 1995a: 25.|
|Current subspecies: nominal plus Leptothorax muscorum uvicensis.|
Found most commonly in these habitats: 8 times found in conifer forest, 1 times found in conifer woods, 3 times found in subalpine scrub, 3 times found in rocky ridge crest in conifer forest, 2 times found in small pine stand in grassland, 2 times found in early successional vegetation, 4 times found in clearcut/mature conifer edge, 1 times found in Edge of bulldozed area in pine woodland; rocky soil, piles of dead wood, 2 times found in coastal dunes/shorepines, 1 times found in forest/grassland edge, ...
Collected most commonly using these methods or in the following microhabitats: 67 times search, 2 times Winkler, 1 times Davis sifter, 1 times Winkler sample, one and a half mesh sacks filled, 1 times bait, 1 times ex. mushrooms on conifer logs, 1 times under stone
Elevations: collected from 2 - 3040 meters, 929 meters average