Myrmica williamsi

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Myrmica williamsi
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Myrmicini
Genus: Myrmica
Species: M. williamsi
Binomial name
Myrmica williamsi
Radchenko & Elmes, 1999

Myrmica williamsi P casent0900335.jpg

Myrmica williamsi D casent0900335.jpg

Specimen Label

Nests of Myrmica williamsi were found under stones in open meadows of mountain slopes. Temperature and humidity of the collection site ranged from 19-23°C and 63-75%. Altitudinal range of this species varies from 2000m to 3500m above mean sea level (Bharti et al., 2016).


M. williamsi was described from a single holotype worker because this specimen so well differs from any other Myrmica species that have antennal scapes weakly curved at their base and frontal carinae that curve outwards to merge with the rugae which surround antennal sockets. The main distinguishing features are the very short, dentiform but sharp propodeal spines and unusual sculpture of the alitrunk: the promesonotal dorsum is coarsely reticulate and very finely punctated, sides of the pronotum are sinuously rugulose; while the remaining parts of the alitrunk, petiole and postpetiole have no rugae but are densely punctated. (Radchenko and Elmes 2010)

Keys including this Species


Known only from the type locality in the Kashmir State in India.

Distribution based on Regional Taxon Lists

Oriental Region: India (type locality).

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb



Known only from the worker caste.


The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.

  • williamsi. Myrmica williamsi Radchenko & Elmes, 1999a: 34, fig. 2 (5-8) (w.) INDIA. See also: Radchenko & Elmes, 2010: 325.

Type Material



Radchenko and Elmes (2010) - named for the collector, Dr. Paul H. Williams of the Natural History Museum, London.


References based on Global Ant Biodiversity Informatics

  • Radchenko A. G., and G. W. Elmes. 2010. Myrmica ants (Hymenoptera: Formicidae) of the Old World. Fauna Mundi 3. Warsaw: Natura Optima Dux Foundation, 790 pp.
  • Radchenko, A. G., and G. W. Elmes. "A taxonomic revision of the ant genus Myrmica Latreille, 1804 from the Himalaya (Hymenoptera: Formicidae)." Entomologica Basiliensia 23 (2001): 237-276.