Tetramorium barbigerum

Only known from type locality, Okombaha in Namibia.

Identification
Tetramorium barbigerum is easily distinguished from all the species in T. solidum- group by its shape of head, which is narrow in front of the eyes. Morphologically this species is similar to T. jordani and T. signatum in that they are all black in colour and lack erect hairs on the mesosoma but the sculpture in T. signatum is much stronger compared to T. jordani and T. barbigerum. Tetramorium barbigerum and T. jordani have feeble cephalic sculpture, fading out at the level of the eyes and replaced by fine superficial punctuation. These two species can be easily distinguished by the lack of propodeal spines in T. jordani (Mbanyana 2013).

Distribution based on Regional Taxon Lists
Afrotropical Region: Namibia.

Nomenclature

 *  barbigerum. Tetramorium barbigerum Bolton, 1980: 243, figs. 19, 20, 25 (w.) NAMIBIA.