Tetramorium microgyna

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Tetramorium microgyna
Conservation status
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Crematogastrini
Genus: Tetramorium
Species: T. microgyna
Binomial name
Tetramorium microgyna
Santschi, 1918

Tetramorium microgyna casent0280926 p 1 high.jpg

Tetramorium microgyna casent0280926 d 1 high.jpg

Specimen Labels

Occurrence records are sparse for this inquiline. This ant has only been found in the nests of Tetramorium sericeiventre and Tetramorium sepositum. Female T. microgyna are smaller than their host workers.

At a Glance • Social parasite  



Distribution based on Regional Taxon Lists

Afrotropical Region: Angola, South Africa (type locality), Zimbabwe.

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.



Images from AntWeb

Tetramorium microgyna casent0280926 p 2 high.jpg
Queen (alate/dealate). Specimen code casent0280926. Photographer Shannon Hartman, uploaded by California Academy of Sciences. Owned by NHMUK, London, UK.


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

  • microgyna. Tetramorium microgyna Santschi, 1918b: 132 (q., not w.) SOUTH AFRICA. See also: Arnold, 1926: 253; Santschi, 1928f: 207; Bolton, 1980: 329.

Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.



Bolton (1980) - TL 3.0-3.5, HL 0.72-0.76, HW 0.62-0.66, CI 84-89, SL 0.68-0.70, SI 106-109, PW 0.48-0.56, AL 1.00-1.12 (6 measured).

An inquiline species known only from females (queens) found in nests of sericeiventre and sepositum in Rhodesia and South Africa and differing radically from the true queens of these species. Females of microgyna are much smaller than the host workers, whereas the real females of the hosts are larger than their workers. In terms of colour and sculpture the queens of sericeiventre and sepositum resemble their workers, but inquiline females of microgyna are much lighter, usually dull yellow with brown gaster and are much more delicately and finely sculptured. All surfaces of the head, alitrunk and pedicel segments in microgyna are exceedingly finely and incredibly densely shagreened so that the surfaces look dull and very finely granular. Rugulose sculpture is generally absent but in a few individuals some exceptionally fine rugular traces are present on the dorsum of the head between the frontal carinae and more rarely laterally on the mesoscutum. Gaster in most cases is as finely sculptured as the rest of the body but in some there are extremely fine costulae discernible.

Type Material

Bolton (1980) - Holotype female, South Arrica: Natal, 1895 (Haviland) (Naturhistorisches Museum, Basel) [examined].


References based on Global Ant Biodiversity Informatics

  • Santschi F. 1937. Résultats de la Mission scientifique suisse en Angola (2me voyage) 1932-1933. Fourmis angolaises. Revue Suisse de Zoologie. 44: 211-250.
  • Wheeler W. M. 1922. Ants of the American Museum Congo expedition. A contribution to the myrmecology of Africa. VIII. A synonymic list of the ants of the Ethiopian region. Bulletin of the American Museum of Natural History 45: 711-1004