Tetramorium sudanense

Tetramorium sudanense
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Hymenoptera
Family:	Formicidae
Subfamily:	Myrmicinae
Tribe:	Crematogastrini
Genus:	Tetramorium
Species:	T. sudanense
Binomial name
	Tetramorium sudanense; (Weber, 1943)

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.

Keys including this Species

Key to Afrotropical Tetramorium angulinode species group

Distribution

Distribution based on Regional Taxon Lists

Afrotropical Region: Sudan (type locality).

Distribution based on AntMaps

Distribution based on AntWeb specimens

Check data from AntWeb

Countries Occupied

Number of countries occupied by this species based on AntWiki Regional Taxon Lists. In general, fewer countries occupied indicates a narrower range, while more countries indicates a more widespread species.

Estimated Abundance

Relative abundance based on number of AntMaps records per species (this species within the purple bar). Fewer records (to the left) indicates a less abundant/encountered species while more records (to the right) indicates more abundant/encountered species.

Biology

Castes

Nomenclature

The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.

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

Description

References

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(3):193-384.
Weber, N. A. 1943d. The ants of the Imatong Mountains, Anglo-Egyptian Sudan. Bulletin of the Museum of Comparative Zoology 93: 263-389 (page 373, pl. 16, fig. 40 worker described)

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.