L abidus

These are legionary ants and they live in temporary nests in decayed logs and stumps, or in soil beneath stones and other objects. However, they may also nest around building foundations and under concrete floors. Workers are 3-10 mm long and brown to reddish brown. Antennae are very short, 12-segmented, and without a club; eyes are absent or very small. The body is usually smooth and shiny; the epinotum lacks spines. The pedicel is two-segmented, and usually there is a short spine on the ventral surface of gaster segment 1.

Labidus coecus (Fig. 9.6a) Workers are 2.9—9.7 mm long and brown to reddish brown. The scape is short and extends to about the midpoint of the head. The head and abdomen are smooth and shiny, and the posterior half of the thorax is opaque. Nests in natural habitats are in decayed logs and stumps, in the ground under stones. In the urban environment, they nest around building foundations and under concrete slabs. Colonies are large and workers forage for arthropods, small mammals, and birds, which the ants kill and eatas carrion or refuse. Food with a high protein content is preferred, and they may enter houses when foraging. This species is native to North America, and occurs from the midwestern states south to Argentina.

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