Camponotus bidens Mayr 1870

Formicinae, Formicidae, Hymenoptera, Insecta, Arthropoda, Animalia

worker lateral view

worker face view

major lateral view

major face view

Additional images: major worker, lateral view of head (reduced, original).


Costa Rica to Guianas. Costa Rica: southern Pacific lowlands.


Minor worker: Propodeum with distinct pair of posteriorly projecting subtriangular teeth; dorsal face of propodeum subrectangular, longer than wide in dorsal view; propodeal spines widely spaced; first gastral tergite with very dilute pubescence, not obscuring integument; petiole subquadrate, not scale-like; dorsum of pronotum punctate; propodeal suture weakly impressed; propodeal spines relatively long and spiniform (shorter and more triangular in sanctaefidei).

Major worker: clypeus lacking pair of projecting lobes (present on sanctaefidei), propodeal spines distinct, spiniform (blunt tubercles on sanctaefidei).

Similar species: sanctaefidei.

Natural History

This tiny species inhabits highly insolated habitats. In Costa Rica I know it mainly from Corcovado National Park, where it seemed to be more common near the beach margin than further inland. I collected it five times in Corcovado, and all the collections were from the beach edge. Four of the collections were diurnal foragers (one on a Cissus inflorescence, one on a Simaba cedron inflorescence, others on low vegetation). One collection was a nest in the hollow stem of a small Salvia-like plant on one of the rock islands at Llorona. At Carara, near the headquarters building, I found a nest in a 7mm diameter dead stick in roadside vegetation.

Type Data


Literature Cited

Mayr, G. 1870. Formicidae novogranadenses. Sitzungsber. Kais. Akad. Wiss. Wien Math.-Naturwiss. Cl. Abt. I 61:370-417.

Page author:

John T. Longino, The Evergreen State College, Olympia WA 98505

Date of this version: 22 January 2002
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