Polyrhachis orsyllus

Smith, F., 1861, Catalogue of hymenopterous insects collected by Mr. A. R. Wallace in the Islands of Ceram, Celebes, Ternate, and Gilolo., Journal of the Proceedings of the Linnean Society of London, Zoology 6, pp. 36-48 : 39

8. Polyrhachis orsyllus .

F. niger, cinereo-sericeo vestitus; thorace supra deplanato; spinis duabus acutis antice armato; squama integra; tibiis ferrugineis.

Worker. Length 3 lines. Black and thinly clothed with silky cinereous pile; the extreme apex of the flagellum and the palpi pale rufo-testaceous. The head and thorax above longitudinally and delicately striated; the margins of the thorax acute and slightly raised; the spines on the prothorax short, stout, and acute; the tibiae ferruginous, the posterior pair rather dusky. Abdomen globose, the node of the peduncle broad, with its superior margin rounded, not spined. (Pl. I. fig. 6.)

Hab. Celebes (Tondano).