Crematogaster difformis

Smith, F., 1858, Catalogue of the hymenopterous insects in the collection of the British Museum. Part VI. Formicidae., London: British Museum : 137

7. Crematogaster difformis , B.M.

Worker. Length 2 1/4 lines.-Black: the head twice as wide as the thorax; the tips of the mandibles and the apical joints of the flagellum dark ferruginous; the head smooth and shining; the eyes small, placed about the middle at the sides of the head. Thorax: the anterior margin rounded, the metathorax greatly dilated, with a deep excavation behind; the legs stout, with their articulations and the tarsi ferruginous. Abdomen heart-shaped, with the base, in some examples, slightly ferruginous. Worker minor only differs in being one-third smaller.

Hab. Borneo (Sarawak); Singapore,