Poneracantha mediatrix

Apparently of lowland forests, one series taken from a varzea habitat. Its morphology puts it within the rastrata group, and it is quite probably a millipede hunter.

Identification
A member of the banksi complex (in the banksi subgroup of the rastrata species group). Mandibles elongate and triangular, their basal 2/3 rugulose and a pical 1/3 smooth and shining; clypeal lamella medianly concave; scapes with no erect hairs; petiolar costulation mostly transverse, node broader than long; metacoxal teeth very slender, propodeal teeth short. Rarely collected, it is a close relative of Gnamptogenys laticephala. (Lattke 1995)

Key to New World Gnamptogenys Species

Distribution based on Regional Taxon Lists
Neotropical Region: Brazil, Ecuador.

Nomenclature

 *  mediatrix. Gnamptogenys mediatrix Brown, 1958g: 326, fig. 15 (w.q.) BRAZIL.