AntWiki: The Ants --- Online
Jump to navigation Jump to search
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Formicinae
Tribe: Camponotini
Genus: Camponotus
Subgenus: Myrmopiromis
Wheeler, W.M., 1921
Type species
Formica fulvopilosa, now Camponotus fulvopilosus

Camponotus fulvopilosus casent0280306 p 1 high.jpg

Camponotus fulvopilosus casent0280306 d 1 high.jpg

Specimen Labels

Furry Carpenter Ants

(See also Orthonotomyrmex, Myrmepinotus, Myrmotrema, and Myrmisolepis.)

Diagnosis. Emery (1925) - "Workers and queens - Large to medium species; caste dimorphism somewhat marked. Head of majors and queens wider than long, narrower anteriorly, widely truncated or sometimes slightly emarginate posteriorly; head of minors similar, but less broad. Cheeks without large punctae, as are characteristic of which are characteristic for Myrmotrema. Clypeus medially carinate, sometimes carina absent in majors; clypeus with short, truncated, or rounded anterior lobe. Mesosomal dorsum arched, continuous (fulvopilosus niveosetosus groups), or more-or-less strongly impressed anterior to propodeum (chrysurus and sclaris groups); pronotum sometimes with narrowly rounded (blunt) tooth at the shoulders (fulvopilosus, ellioti). Petiolar scale usually not thick, but thinned or sharp along margins. Cuticle matte, black or brown, most often lined with coarse, yellow, red, or white setae. Or with fine pubescence, forming gastral fur. Male. - Similar to Myrmepinotus. I know the males of C. fulvopilosus and C. darwini. The first has longer antennae, with scapes extending beyond posterior head margin by more than half their length; pedicel and flagellum as in Myrmepinotus.

Geographical distribution of species. - Southern and Eastern Africa, Madagascar, Mascarenes, and Seychelles."

(Translated and edited by B. E. Boudinot, 17 February 2017.)

Myrmopiromis is currently a subgenus of Camponotus.

Species groups of Myrmopiromis

Emery (1925) divided Myrmopiromis into three species groups, which he diagnosed as follows:

"Group I: fulvopilosus

Diagnosis. - Worker. - Slender, large in size; dorsum of mesosoma continuous, pronotum shouldered, tibiae compressed and with bristles on ventral margin.

Group II: niveosetosus

Diagnosis. - Worker. - Generally medium in size; body more-or-less squat; mesosomal dorsum continuous; pronotum rounded or shouldered; tibiae without bristles on ventral margin.

Rakotonirina et al. (2017) - The Camponotus niveosetosus species group is currently equivalent to the subgenus Myrmopiromis. Although we continue the practice of placing Camponotus taxa in their respective subgenera, this study does not address the support of subgenera as monophyletic lineages. Because initial results suggest many of the subgenera are not natural, we employ the species group nomenclature in the present study. See the Camponotus niveosetosus species group page for more information about this group.

Group III: chrysurus

Diagnosis. - Worker.- Medium in size; mesosomal dorsum impressed anterior to propodeum; propodeum rounded (Myrmopelta [part] and Myrmisolepis [part], sensu Santschi)."


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

  • MYRMOPIROMIS [subgenus of Camponotus]
    • Myrmopiromis Wheeler, W.M. 1921a: 17 [as subgenus of Camponotus]. Type-species: Formica fulvopilosa, by subsequent designation of Wheeler, W.M. 1922a: 707.


  • Bolton, B. 2003. Synopsis and Classification of Formicidae. Mem. Am. Entomol. Inst. 71: 370pp (page 118, Myrmopiromis as subgenus of Camponotus)
  • Emery, C. 1925d. Hymenoptera. Fam. Formicidae. Subfam. Formicinae. Genera Insectorum 183: 1-302 (page 127, Myrmopiromis as subgenus of Camponotus)
  • Wheeler, W. M. 1921a. Professor Emery's subgenera of the genus Camponotus Mayr. Psyche (Camb.) 28: 16-19 (page 17, Myrmopiromis as subgenus of Camponotus)
  • 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 707, Type-species: Formica fulvopilosa, by subsequent designation ; Myrmopiromis as subgenus of Camponotus)