Notostigma foreli (False sugar ant)

Taylor (1992) - Notostigma foreli is relatively large as a non-myrmeciine ant, but it is smaller than Notostigma carazzii. Head width in the largest workers is about 4 mm, and the occipital border is at most only feebly concave in frontal view, even in the largest workers. The ground colour is dull golden brown, with the head slightly, but usually distinctly darker.

Notostigma foreli workers are solitary, nocturnal foragers. The soil excavated from a nest may form a pronounced symmetrical cone, about 0.3 m high, surrounding the open summit entrance. The raised, reddish local sub-soil often makes these very easily seen. During the day above-ground effort to disturb the ants is typically ineffectual, but at night large numbers of workers may be present on the mound surfaces. (Source: AntWiki)

Shattuck (1999) - Identification of Notostigma. The antennal sockets are separated from the rear margin of the clypeus by a gap greater than the smallest diameter of the scape. The mandibles have more than ten teeth. The simple eyes (ocelli) are present on the top of the head. They are large ants, over 10mm in total length, with elongate bodies and long antennal scapes.

Species of Notostimgma can be separated from other formicinies by their large body size, long scapes, numerous mandibular teeth and the presence of a small opening above the hind legs (the metapleural gland opening). The are most commonly confused with larger species of Camponotus, but they differ as mentioned. (Source: AntWiki)