83. Formica ruficeps. Worker. Length 4 lines.-Black: the head and the thorax in front ferruginous; the head smooth, shining, and much wider than the thorax; the mandibles and scape black, the apex of the former ferruginous; the flagellum pale rufo-testaceous. The thorax much compressed behind; the tips of the coxae, femora and tibiae, and the tarsi ferruginous. Abdomen smooth and shining; the scale of the peduncle ovate, its apex acuminate; the legs and the apex of the abdomen with a thin short pale pubescence. Worker minor only differs in size and in having the mandibles ferruginous. Hab. Borneo (Sarawak). (Coll. W. W. Saunders, Esq.)

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 24