Tetramorium sudanense

There has presumably been only a single specimen of this species collected, the missing holotype. Without it, nothing can be deduced about the validity of this name.

Identification
A member of the Tetramorium angulinode species group.

Bolton (1980) - The original description gives a picture of a species in the angulinode-group with measurements close to the bottom end of the range of T. angulinode itself (TL 2:3, AL 0-64) and generally bearing a close resemblance to the species. The following differences culled from Weber’s description may be of importance.


 * 1. Head slightly longer than broad.
 * 2. Eyes closer to occipital than to clypeal margin.
 * 3. Petiole with a massive squarish node, longer than broad in dorsal view.
 * 4. Pedicel segments reticulate-punctate; postpetiole with a smooth median area.

There is not enough information given to pin down this species with any degree of accuracy and for this reason it has been omitted from the key. The only course which can be taken at present is to treat the name as a nomen dubium until the holotype is found (if that is possible) or until extensive collections can be made at the type-locality which may give some clue to the real identity of this species.

Distribution based on Regional Taxon Lists
Afrotropical Region: Sudan.

Nomenclature

 *  sudanense. Xiphomyrmex sudanensis Weber, 1943c: 373, pl. 16, fig. 40 (w.) SUDAN. Combination in Tetramorium: Bolton, 1980: 241.

References based on Global Ant Biodiversity Informatics

 * Bolton B. 1980. The ant tribe Tetramoriini (Hymenoptera: Formicidae). The genus Tetramorium Mayr in the Ethiopian zoogeographical region. Bulletin of the British Museum (Natural History). Entomology 40: 193-384.
 * Weber N. A. 1943. The ants of the Imatong Mountains, Anglo-Egyptian Sudan. Bulletin of the Museum of Comparative Zoology 93: 263-389.