Catalogue of the hymenopterous insects in the collection of the British Museum. Part VI. Formicidae. Smith, F. CMD5Z urn:lsid:biosci.ohio-state.edu:osuc_concepts:143661 Insecta Formicidae Myrmica Animalia Myrmica trachylissa Smith Hymenoptera 126 126 Arthropoda species trachylissa  Female. Length 3 lines.-Ferruginous: the head and thorax coarsely rugose, longitudinally grooved, the grooves with deep, large punctures; the head very large, larger than the thorax, the latter nearly globose; the verge of the truncation of the metathorax widely emarginate, the lateral angles produced, forming acute teeth. Abdomen very smooth and shining, the nodes of the peduncle smooth, shining and subglobose.  Hab. Borneo. (Coll. A. R. Wallace.)