Polyrhachis rugosus

58. Polyrhachis rugosus. B.M. Worker. Length 5 1/2 lines.-Black: the abdomen densely clothed with pale golden silky pubescence. Head elongate and coarsely rugose; eyes very prominent, placed backwards on the sides of the head; the head much narrowed behind the eyes, before the eyes it is slightly widened to the angles of the anterior margin, which is rounded; the mandibles large and triangular, finely denticulate on their inner margin; antennae elongate and slender, the scape with a number of erect, long hairs. Thorax elongate, slender, and coarsely rugose; the prothorax narrowed anteriorly into a kind of neck, the mesothorax narrower than the pro- or metathorax, the latter elevated and furnished with two long, stout spines; legs elongate and having a number of erect, long hairs. Abdomen ovate; the node of the peduncle elongated, incrassate and slightly bent, widest at the base. Hab. Brazil (Ega). (Coll. H. W. Bates.)Published as part of Smith, F., 1858, Catalogue of the hymenopterous insects in the collection of the British Museum. Part VI. Formicidae., London :British Museum on page 7