Odontomachus opaciventris Forel 1899

Formicidae, Hymenoptera, Insecta, Arthropoda, Animalia

worker petiole, lateral view

worker lateral view


Southern Mexico to Colombia (Brown 1976). Costa Rica: common in uplands of Cordillera de Tilaran and Cordillera Volcanica Central; the common species in Monteverde; less common to sea level on Atlantic slope (La Selva) and 500m on Pacific slope (Carara).


Face to near margin of vertex striate; large black or dark brown species (head length, not including mandibles, greater than or equal to 3mm); disc of first gastric segment densely and regularly punctulate throughout.

Natural History

In Monteverde the diurnal foragers are common, and on warm days alate queens commonly fly into buildings. Nests are in rotten wood on the ground. Workers have been observed harvesting Calathea seeds. The species is rare at La Selva.

Type Data

Odontomachus haematodus r. opaciventris Forel 1899:21. Syntype worker, queen: Mexico; Guatemala; Costa Rica; Panama.

Literature Cited

Brown, W. L., Jr. 1976. Contributions toward a reclassification of the Formicidae. Part VI. Ponerinae, tribe Ponerini, subtribe Odontomachiti. Section A. Introduction, subtribal characters. Genus Odontomachus. Studia Entomol. 19:67-171.

Forel, A. 1899. Formicidae. Biol. Cent.-Am. Hym. 3:1-160.

Page author:

John T. Longino, The Evergreen State College, Olympia WA 98505 USA.longinoj@evergreen.edu

Date of this version: 7 January 1999
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