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Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Formicinae
Tribe: Camponotini
Genus: Camponotus
Subgenus: Myrmostenus
Emery, 1920
Type species
Camponotus mirabilis

Camponotus mirabilis casent0249616 p 1 high.jpg

Camponotus mirabilis casent0249616 d 1 high.jpg

Specimen Labels

Narrow-head Carpenter Ants

Diagnosis. Emery (1925). - "Queen. - Large species; body narrow and very long. Head depressed, very much longer than broad, with lateral margins parallel and posterior head margin either truncate or concave, or with lateral head margins converging posteriorly. Clypeus less depressed than cheeks, carinate, produced anteriorly and scalloping more-or-less marked. Frontal carinae rather short, sinuate; antennal toruli placed about at midlength of carinae. Mandibles weakly curved and with long apical tooth (C. mirabilis, Emery), or very curved with subequal teeth. Mesosoma very long and narrow. Petiolar scale thick, subnodiform; gaster very long. Worker (and soldier?) and male unknown.

Geographical distribution of species. - Confined to Peru, Bolivia, and Brazil [Brazilian records from MacKay (1997)."

(Translated and edited by B. E. Boudinot, 19 February 2017.)

Myrmotemnus is currently a subgenus of Camponotus.


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

  • MYRMOSTENUS [subgenus of Camponotus]
    • Myrmostenus Emery, 1920b: 250 [as subgenus of Camponotus]. Type-species: Camponotus mirabilis, by original designation.


MacKay (1997) revised Myrmostenus and provided a key to all species.


  • Bolton, B. 2003. Synopsis and Classification of Formicidae. Mem. Am. Entomol. Inst. 71: 370pp (page 117, Myrmostenus as subgenus of Camponotus)
  • Emery, C. 1920b. Le genre Camponotus Mayr. Nouvel essai de la subdivision en sous-genres. Rev. Zool. Afr. (Bruss.) 8: 229-260 (page 250, Myrmostenus as subgenus of Camponotus)
  • Emery, C. 1925d. Hymenoptera. Fam. Formicidae. Subfam. Formicinae. Genera Insectorum 183: 1-302 (page 161, Myrmostenus as subgenus of Camponotus)
  • MacKay, W. P. 1997A. A revision of the Neotropical ants of the genus Camponotus, subgenus Myrmostenus (Hymenoptera: Formicidae). Proceedings of the Entomological Society of Washington 99:194-203.
  • Wheeler, W. M. 1922i. Ants of the American Museum Congo expedition. A contribution to the myrmecology of Africa. VII. Keys to the genera and subgenera of ants. Bull. Am. Mus. Nat. Hist. 45: 631-710 (page 709, Myrmostenus as subgenus of Camponotus)