Monomorium mediocre

Nothing is known about the biology of .

Identification
Bolton (1987) - This small yellowish species with very reduced sculpture and pilosity appears to be closely related to the Namibian Monomorium esharre and Monomorium nirvanum. The last named is easiest distinguished by its retention of a pair of hairs on the petiole node, which is absent in the other two. M. mediocre and esharre are separated by their differences in cephalic index, eye size, and relative position of eyes which in esharre are slightly in front of the midlength of the sides.

Distribution based on Regional Taxon Lists
Afrotropical Region: Namibia, South Africa, Zimbabwe.

Nomenclature

 *  mediocre. Monomorium mediocre Santschi, 1920d: 376, fig. 13 (w.) SOUTH AFRICA. See also: Bolton, 1987: 349.

Worker
Bolton (1987) - TL 1.9-2.0, HL 0.50-0.54, HW 0.41-0.43, CI 80-84, SL 0.37-0.39, SI 90-93, PW 0.26-0.27, AL 0.54-0.56 (7 measured).

Median portion of clypeus with the anterior margin transverse to shallowly convex. With the head in full-face view the sides more or less evenly shallowly convex and the occipital margin shallowly concave medially. Eyes at midlength of sides, the maximum diameter of the eye 0.21-0.24 x HW and with 6-8 ommatidia in the longest row. Promesonotal dorsal outline convex in profile, sloping posteriorly to the metanotal groove which is feebly or not impressed. Dorsum of head without standing hairs behind level of the frontal lobes. Dorsal alitrunk without standing hairs. Petiole node lacking hairs but postpetiole with a single backward directed pair. First gastral tergite hairless except for the apical transverse row. Dorsum of head with extremely faint superficial reticular patterning, which is almost effaced. Pronotum with superficial reticular patterning, which is almost effaced. Pronotum with superficial reticular patterning, the mesonotum posteriorly somewhat more strongly reticulate and the propodeum very finely granulate to weakly punctulate-shagreenate. First gastral tergite only superficially marked with faint reticular patterning. Colour uniformly yellow to very light brown, frequently the gastral tergites behind the first darker in shade than the first.

Type Material
Bolton (1987) - Syntype workers, South Africa: Kimberley (G. Arnold) [examined].