Technomyrmex (Engramma) zimmeri (Forel)

Type location Tanzania (Engramma zimmeri, Forel, 1911d: 370, worker) collected at Amani, by Zimmer, combination in Technomyrmex by Shattuck (1992b); subspecies okiavoensis (Forel, 1916: 413, worker) from Zaïre, Okiavo River, near St. Gabriel ; worker only described (Bolton, 1995) .

Bolton (2007: 34) has removed okiavoensis to a junior synonym of Technomyrmex schoutedeni.

Forel's (1911d) description is - .

WORKER - TL 3.4-3.5; mandibles smooth, shiny, lightly puncturate, with at least 10 teeth; strongly crossed when closed. Clypeus short, slightly extended between the frontal carinae; widely and very feebly scalloped in the median third of the anterior border. Frontal area triangular and feebly defined. Frontal carinae separated by the distance of each from the sides of the face. No post-clypeal notch. Head with strongly convex sides, strongly narrowed anteriorly, the enlarged, then a little narrowed at the occiput, strongly scalloped posteriorly, slightly wider than long at maximum. Eyes convex - bigger than lujae and laurenti, about the same as ilgi; situated in the anterior two-fifths of the head. Scape surpassing the cocciput by almost a quarter of its length. Funiculus narrowing towards the apex; all the segments longer than wide, the second and pentultimate smaller. Thorax proportionately narrower and more elongated than the others. Promesonotum slightly convex, profile interrupted by a strong transverse impression at the suture. Metanotal groove deep with spiracles at the base. Propodeum in a single hump longer than wide, dorsum very convex. Scale entirely welded (soudée); pedicel very elongated. Gastral orifice inferior.
Head and thorax subopaque; gaster shiny, finely reticulate; thorax more strongly reticulate; head densely puncturate. Whole of body and appendage covered with very fine pruinose pubescence, but not concealing the sculpture. Erect hairs sparse and very fine on the body; lower legs and antennae without erect hairs.
Uniform red yellow, gaster black, with the segments narrowly bordered with yellow.
Single worker from Amani, Tanzania, by Zimmer.
Resembling Technomyrmex semiruber but that has the gastral apex terminal; appendages with erect hairs, the head shiny and the propodeum much shorter and more domed. I [Forel} place this species provisionally in the genus Engramma, but without knowing its gizzard structure.

Bolton's brief note (2007: 42), not illustrated is at .