Formica lutosa

Smith, F., 1858, Catalogue of the hymenopterous insects in the collection of the British Museum. Part VI. Formicidae., London: British Museum : 42-43

143. Formica lutosa . B.M.

Worker. Length 2 lines.-Head and thorax of a reddishyellow; the legs pale testaceous; abdomen of a dirty clay colour, with the margins of the segments more or less fuscous or black. Head large, much wider than the thorax, smooth and shining, or very obsoletely and delicately punctured, the anterior margin of the clypeus entire. Thorax opake, and flattened above, compressed posteriorly. Abdomen ovate and shining; the scale of the peduncle subovate, pointed in the middle above.

Hab. Brazil (Villa Nova on the Amazons). (Coll. H. W. Bates.)