|scientific name Formica oreas |
Found in open wooded areas and grasslands, prefer sunny spots (Wheeler and Wheeler, 1963).
Found through May to September.
Workers are ~3.5-7.0 mm in length, with a dark red head and thorax with a reddish-black gaster (Wheeler and Wheeler, 1963). The crest of the petiole is thin in profile and the gastric pubescence is never reflected (Creighton, 1950 and Wheeler and Wheeler, 1963). Body hairs are uniform in length and the scape has delicate erect hairs on it (Creighton, 1950 and Wheeler and Wheeler, 1963).
Facultative slave makers, these ants will raid nest of the fusca group complex for slaves (Wheeler and Wheeler, 1963). Not much else is known.
Not of concern.
Omnivorous, but predate heavily on insects; will also farm aphids.
Saskatchewan to Utah and North Dakota to Washington (Wheeler and Wheeler, 1963). Only one site has been reported from Alberta: Rainbow Valley, Edmonton (Sharplin, 1966).
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