Monomorium egens Forel

Type location Cameroun (Forel, 1910e: 443, worker) no location, collector L. von Muralt; junior synonyms jucundum (Santschi, 1926b: 232, worker) from Zaïre, collected at Luebo, by H. Schouteden, 16.xii.1921; and longiusculum Santschi, 1926b: 237, illustrated, worker) from Zaïre, collected at Lukuga supérieur, by Gérard (synonymies by Bolton, 1995) .

Forel's (1910e) description is at . Santschi's (1926b) description of jucundum is at . Santschi's (1926b) description of longiusculum is at . Bolton's modern description (1987) is at .

Nigeria specimens (Taylor, 1980a: 31) - WORKER. TL 2.45 mm, HL 0.61, HW 0.53, SL 0.54, PW 0.31
Others TL 2.0-2.5 mm (Bolton, 1987, illustrated, full-face view, and lateral alitrunk and pedicel).
Colour dark brown; except for the funiculi, tibiae and tarsi, which are yellow; unsculptured and highly polished. Erect hairs long and abundant. Dorsum of pronotum distinctly flattened. Clypeal carinae faint.

Bolton (1987) noted that it usually nests in the soil or in fallen tree trunks, foraging in the wood and surrounding leaf litter.

From Ghana, he listed findings at Adeiso, Asamankese, Atewa, Bunso, Enchi, Legon and Mepom (D. Leston), at Aburi and Afwerase (P.M. Room), and CRIG (B. Bolton). Since described as widespread by Belshaw & Bolton (1994b), who found eight workers from leaf litter samples at seven locations in the semi-deciduous forest zone.

In Nigeria, I collected it from herbaceous vegetation around a cocoa plot at CRIN. Collection listed by Bolton (1987), plus one by himself (In my Guide as Monomorium species T¹)

Bernard (1952) listed it (as jucundum) from Guinea; several workers, Nion, scrub on crest, 1300 m; one queen from Nion, 700 m.

Otherwise from Ivory Coast, at Banco Forest (W.L. Brown); Cameroun, above plus at Nko'emvon, several short series (D.A. Jackson); also Angola and Zaïre (Bolton, 1987).