Taxonomy of the ant genus Nesomyrmex Wheeler (Formicidae, Myrmicinae) in the Afrotropical region, with a review of current species groups and description of a new species of the N. angulatus group from Mozambique

  • Francisco Hita Garcia Okinawa Institute of Science and Technology, Onna-son, Okinawa
  • Nokuthula Mbanyana Iziko South African Museum, Cape Town
  • Tracy Lynn Audisio Okinawa Institute of Science and Technology, Onna-son
  • Gary D. Alpert Museum of Comparative Zoology, Harvard University, Cambridge, Massachusetts
Keywords: ant taxonomy, identification key, Inhaca Island, new species, systematics


This study reviews the taxonomy of the ant genus Nesomyrmex Wheeler, 1910 in the Afrotropical region. Previous revisionary studies are discussed and four species groups are proposed on the basis of external morphology. The N. angulatus group contains seven species that are widely distributed throughout the whole Afrotropical region, with one species also occurring in the Palaearctic and Malagasy regions. The N. cataulacoides group is monotypic, with one morphologically bizarre species found in Equatorial rain forests. The N. humerosus group is also monotypic and occurs in East Africa. The last and by far most species-rich group is the N. simoni group that contains 17 species, all of which are endemic to South Africa. The four groups are defined for the first time for the region, and an illustrated identification key is provided. Furthermore, the N. angulatus group is more thoroughly reviewed. One new species from Mozambique is described, N. inhaca sp. nov., and species accounts for the other six are provided. Also, an illustrated identification key to the species of the N. angulatus group is presented.


Arnold G. 1948. New species of African Hymenoptera. No. 8. Occasional Papers of the National Museum of Southern Rhodesia 2: 213–250.

Bolton B. 1982. A revision of six minor genera of Myrmicinae (Hymenoptera: Formicidae) in the Ethiopian zoogeographical region. Bulletin of the British Museum (Natural History), Entomology 43: 245–307.

Bolton B. 1994. Identification Guide to the Ant Genera of the World. Harvard University Press, Cambridge, Massachusetts.

Bolton B. 2003. Synopsis and classification of Formicidae. Memoirs of the American Entomological Institute 71: 1–370.

Bolton B. 2016. AntCat: An online catalog of the ants of the world. Available from [accessed 26 Jan. 2016].

Brown W.L. 1971. Characters and synonymies among the genera of ants. Part IV. Some genera of subfamily Myrmicinae (Hymenoptera: Formicidae). Breviora 365: 1–5.

Brandão C.R.F. 1991. Adendos ao catálogo abreviado das formigas da região Neotropical (Hymenoptera: Formicidae). Revista Brasileira de Entomologia 35: 319–412.

Csősz S. & Fisher B.L. 2015. Diagnostic survey of Malagasy Nesomyrmex species-groups and revision of hafahafa group species via morphology based cluster delimitation protocol. Zookeys 526: 19–59.

De Andrade M.L., Baroni Urbani C., Brandão C.R.F. & Wagensberg J. 1999. Two new species of Leptothorax “Nesomyrmex” fossils in Dominican amber (Hymenoptera: Formicidae). Beiträge zur Entomologie 49: 133–140.

Emery C. 1896. Studi sulle formiche della fauna neotropica. XVII–XXV. Bollettino della Società Entomologica Italiana 28: 33–107.

Emery C. 1915. Formiche raccolte nell’Eritrea dal Prof. F. Silvestri. Bollettino del Laboratorio di Zoologia Generale e Agraria della Reale Scuola Superiore d’Agricoltura 10: 3–26.

Evenhuis N.L. 2016. The insect and spider collections of the world website. Available from [accessed 26 Jan. 2016].

Forel A. 1894. Abessinische und andere afrikanische Ameisen, gesammelt von Herrn Ingenieur Alfred Ilg, von Herrn Dr. Liengme, von Herrn Pfarrer Missionar P. Berthoud, Herrn Dr. Arth. Müller etc. Mitteilungen der Schweizerischen Entomologischen Gesellschaft 9: 64–100. Available from [accessed 24 Nov. 2016].

Forel A. 1913. Formicides du Congo Belge. Recoltés par MM. Bequaert, Luja, etc. Revue de Zoologie Africaine 2: 306–351.

Forel A. 1916. Fourmis du Congo et d’autres provenances récoltées par MM. Hermann Kohl, Luja, Mayné, etc. Revue Suisse de Zoologie 24: 397–460.

Guénard B. & Economo E.P. 2016. Antmaps. Available from [accessed 26 Jan. 2016].

Harris R.A. 1979. A glossary of surface sculpturing. California Department of Food and Agriculture, Bureau of Entomology 28: 1–31.

Hita Garcia F. & Fisher B.L. 2015. Taxonomy of the hyper-diverse ant genus Tetramorium Mayr in the Malagasy region (Hymenoptera, Formicidae, Myrmicinae) – first record of the T. setigerum species group and additions to the Malagasy species groups with an updated illustrated identification key. Zookeys 512: 121–153.

Kempf W.W. 1959. A synopsis of the New World species belonging to the Nesomyrmex-group of the ant genus Leptothorax Mayr (Hymenoptera: Formicidae). Studia Entomologica 2: 391–432.

Mayr G. 1862. Myrmecologische Studien. Verhandlungen der Kaiserlich-Königlichen Zoologisch-Botanischen Gesellschaft in Wien 12: 649–776.

Mayr G. 1895. Afrikanische Formiciden. Annalen des Kaiserlich-Königlichen Naturhistorischen Museums in Wien 10: 124–154.

Mayr G. 1901. Südafrikanische Formiciden, gesammelt von Dr. Hans Brauns. Annalen des Kaiserlich-Königlichen Naturhistorischen Museums in Wien 16: 1–30.

Mbanyana N. & Robertson H.G. 2008. Review of the ant genus Nesomyrmex (Hymenoptera: Formicidae: Myrmicinae) in southern Africa. African Natural History 4: 35–55.

Santschi F. 1912. Quelques nouvelles variétés de fourmis africaines. Bulletin de la Société d’Histoire Naturelle de l’Afrique du Nord 3: 147–149.

Santschi F. 1914. Voyage de Ch. Alluaud et R. Jeannel en Afrique Orientale, 1911–1912. Résultats scientifiques. Insectes Hyménoptères. II. Formicidae. Librerie A. Schulz, Paris.

Snelling R.R. 1992. Two unusual new myrmicine ants from Cameroon (Hymenoptera: Formicidae). Psyche 99: 95–101.

Ward P.S., Brady S.G., Fisher B.L. & Schultz T.R. 2015. The evolution of myrmicine ants: phylogeny and biogeography of a hyperdiverse ant clade (Hymenoptera: Formicidae). Systematic Entomology 40: 61–81.

Wheeler W.M. 1922. Ants collected by the American Museum Congo Expedition. A contribution to the myrmecology of Africa. Bulletin of the American Museum of Natural History 45: 1–1055.

Wilson E.O. 1955. A monographic revision of the ant genus Lasius. Bulletin of the Museum of Comparative Zoology 113: 1–201.

How to Cite
Hita Garcia, F., Mbanyana, N., Audisio, T. L., & Alpert, G. D. (2017). Taxonomy of the ant genus Nesomyrmex Wheeler (Formicidae, Myrmicinae) in the Afrotropical region, with a review of current species groups and description of a new species of the N. angulatus group from Mozambique. European Journal of Taxonomy, (258).