Camponotus bidens

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Camponotus bidens
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Formicinae
Tribe: Camponotini
Genus: Camponotus
Species: C. bidens
Binomial name
Camponotus bidens
Mayr, 1870

Camponotus bidens casent0173549 profile 1.jpg

Camponotus bidens casent0173549 dorsal 1.jpg

Specimen labels


A few specimens of this small, timid ant were taken on a Triplaris with Crematogaster in March. C. bidens and its congeners are known to nest in hollow, dead twigs of a variety of trees (Wheeler and Darlington 1930). I have taken numerous colonies of this species from dead twigs in the following localities in Panama: Frijoles, Corozal, Red Tank, Gatuncillo, Mandingo, Mt. Hope and Barro Colorado Island (Wheeler 1934).



Distribution based on Regional Taxon Lists

Neotropical Region: Brazil, Colombia (type locality), Costa Rica, Ecuador, French Guiana, Guyana, Panama, Peru, Suriname, Trinidad and Tobago.

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb




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

  • bidens. Camponotus bidens Mayr, 1870a: 387 (w.) COLOMBIA. Forel, 1899c: 145 (footnote) (s.); Wheeler, W.M. 1934g: 225 (q.). Combination in C. (Myrmeurynota): Forel, 1912i: 92; in C. (Myrmorhachis): Forel, 1914a: 274; in C. (Myrmocladoecus): Emery, 1925b: 166; Wheeler, W.M. 1934e: 424. Current subspecies: nominal plus repressus.

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



Wheeler (1934) - Dealated, measures nearly 7 mm and is long and slender. Head slightly longer than broad, subtrapezoidal, nearly as wide in front as behind, with straight sides and distinctly convex posterior border. Eyes large, moderately convex, distant nearly one and one-half times their length from the anterior corners of the head. Mandibles convex, 6-toothed. Clypeus very convex and rounded in the middle, depressed on the sides, its anterior border sinuate medially and on each side. Antennal scapes extending nearly twice their greatest diameter beyond the posterior border of the head. Thorax elongate-elliptical, more than twice as long as broad, narrower than the head; mesonotum longer than broad; epinotum with very convex, backwardly sloping base, forming a distinct angle in profile with the longer, perpendicular, slightly concave declivity. Petiolar scale thick, transverse, broader than the posterior part of the epinotum, with very blunt, rounded superior border and convex anterior and posterior surfaces. Gaster elongate-elliptical, parallel-sided in the middle, as long as the remainder of the body.

Subopaque, finely and indistinctly shagreened; scutellum, epinotum, petiole and bases of gastric segments more shining; mandibles, cheeks and clypeus punctate; mesonotum with a few coarse punctures along the parapsidal furrows. Hairs whitish, short, erect and rather sparse, confined to the head, thorax, abdomen, tips of scapes and femora. Pubescence short, dilute and appressed, distinct on the gaster and legs. Black, like the worker; mandibles, antennae, wing-insertions, trochanters, bases of tibiae and terminal tarsal joints, red.


  • Emery, C. 1925d. Hymenoptera. Fam. Formicidae. Subfam. Formicinae. Genera Insectorum 183: 1-302 (page 166, combination in C. (Myrmocladoecus))
  • Forel, A. 1899i. Formicidae. [concl.]. Biol. Cent.-Am. Hym. 3: 137-160 (page 145, (footnote) soldier described)
  • Forel, A. 1912j. Formicides néotropiques. Part VI. 5me sous-famille Camponotinae Forel. Mém. Soc. Entomol. Belg. 20: 59-92 (page 92, combination in C. (Myrmeurynota))
  • Forel, A. 1914a. Le genre Camponotus Mayr et les genres voisins. Rev. Suisse Zool. 22: 257-276 (page 274, combination in C. (Myrorhachis))
  • Mayr, G. 1870a. Formicidae novogranadenses. Sitzungsber. Kais. Akad. Wiss. Wien Math.-Naturwiss. Cl. Abt. I 61: 370-417 (page 387, worker described)
  • Wheeler, W. M. 1934e. Some aberrant species of Camponotus (Colobopsis) from the Fiji Islands. Ann. Entomol. Soc. Am. 27: 415-424 (page 424, combination in C. (Myrmocladoecus))
  • Wheeler, W. M. 1934g. Neotropical ants collected by Dr. Elisabeth Skwarra and others. Bull. Mus. Comp. Zool. 77: 157-240 (page 225, queen described)
  • Wheeler, W. M. and P. J. Darlington, Jr. 1930. Ant-tree notes from Rio Frio, Colombia. Psyche. 37:107-117.