Cryptocerus angulatus

Smith, F., 1858, Catalogue of the hymenopterous insects in the collection of the British Museum. Part VI. Formicidae., London: British Museum : 189-190

9. Cryptocerus angulatus . B.M.

Worker. Length 4 lines. - Black: shining and finely punc- tured; head convex above, margined at the sides, truncate behind; the clypeus emarginate, above which is an opake trian- gular depression, and an abbreviated impressed line above it; the tips of the antennae rufo-piceous. Thorax: the prothorax as broad as the head; the anterior margin arched, margined at the sides, and abruptly narrowed and depressed behind; the mesothorax with its lateral angles produced into flattened teeth or spines rounded at their apex; the metathorax transverse, nar- rowed at the base and notched at the sidss, forming two blunt teeth or spines; the legs with the sides flattened, thinly sprinkled with glittering scales. Abdomen ovate, emarginate at the base, also margined laterally; the nodes of the peduncle transverse, produced at the sides into stout bent spines, those on the first node longest; the punctures on the head, thorax and abdomen each contain a bright glittering scale.

Hab. Brazil (Tunantins). (Coll. H.W. Bates.)