Polyrhachis marginatus

Smith, F., 1859, Catalogue of hymenopterous insects collected by Mr. A. R. Wallace at the Islands of Aru and Key., Journal of the Proceedings of the Linnean Society of London, Zoology 3, pp. 132-158 : 139

3. Polyrhachis marginatus .

P. niger; antennis, palpis pedibusque ferrugineis; thoracis marginibus recurvis, metathorace petiolique squamula bidentatus.

Worker. Length 2 1 / 2 lines. Black; the antennae and legs ferruginous; the head and thorax rugose; the prothorax transverse, its anterior margin slightly curved, with the lateral angles produced forwards and very acute; the thorax narrowed to the metathorax, which is armed with two divergent acute spines. Abdomen velvety black and globose; the scale of the petiole produced laterally into long, bent, acute spines, which curve backwards to the shape of the abdomen.

Hab. Aru.