Eciton curvidentata

Smith, Frederick, 1855, Descriptions of some species of Brazilian ants belonging to the genera Pseudomyrma, Eciton and Myrmica (with observations on their economy by Mr. H. W. Bates), Transactions of the Entomological Society of London (2) 3, pp. 156-169 : 162

Sp. 3. Eciton curvidentata .

Formica curvidentata, Latr . Hist. Nat. des Fourm., p. 269, tab. 8, fig. 55.

Worker.-3| lines. Reddish yellow ; the head paler than the other parts; the flagellum fusco-ferruginous, the scape ferruginous and inserted in a fossulet, the edges of which are raised in front, and recurved round the base of each scapus ; the mandibles dark brown ; short, stout and broadly expanded, the inner edge finely denticulate : head wider than the thorax, narrowed behind, the posterior angles having each a short bent spine. Thorax: an obtuse tubercle on each side at the base of the metathorax ; the first node of the abdomen having at its base beneath a small tooth on each side; the second node has a tooth at its base beneath , pointing forwards. Abdomen ovate, and pointed at the apex : the entire insect thinly sprinkled with pale hairs.

This is probably a smaller form of the worker, either of E. hamata or vagans : it appears to be equally abundant with both those species.