Appearance
"Lasius emarginatus" is a small ant, reaching a length of 3–5.5 mm in the workers, 7–10 mm in the females and 7–14.5 mm in males. In workers and females the thorax is reddish or brownish-red, while the head and the abdomen are brown. Males are completely brown.The longevity of the queen reaches up to 30 years, but for workers it is limited to 3 years. The species is omnivore. Colonies are monogynous. They are not aggressive but they do not mind attacking a potential predator or another colony to expand their hunting and harvesting territory.
Distribution
This species is present in the Western Palearctic. As an invasive species, it is now found in Manhattan where it has taken on the niche of above-ground-level floors in taller buildings.References:
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