Polyrhachis laevigatus

Smith, F., 1857, Catalogue of the hymenopterous insects collected at Sarawak, Borneo; Mount Ophir, Malacca; and at Singapore, by A. R. Wallace., Journal of the Proceedings of the Linnean Society of London, Zoology 2, pp. 42-88 : 62-63

15. Polyrhachis laevigatus .

P. niger, lavis, nitidus; metathorace spinis duabus longis acutis retrorsum directis; abdominis squama spinis duabus curvatis armata; coxis femorumque basi rufis.

Worker. Length 2 1/2 lines. Black, smooth and shining: the flagellum thickened towards the apex. Thorax: the anterior angles acute; the disk not flattened; the metathorax with two long, acute, divergent spines, directed backwards; the scale with a long curved spine on each side, directed to the curve of the abdomen; the coxae and femora ferruginous, the anterior pair obscure. Abdomen globose, smooth and shining.

Hab. Malacca.

I have only seen a single specimen of this species: the clavate antennae appear to indicate its belonging to a different genus.