Trachymyrmex JTL-002

Attini, Myrmicinae, Formicidae, Hymenoptera, Insecta, Arthropoda, Animalia

worker face view

worker lateral view


Costa Rica: Osa Peninsula and Penas Blancas Valley in Cordillera de Tilaran.


Preorbital carina sinuous or straight, extending past eye and directed toward posterolateral vertex margin; in face view with distinct lateral and posterolateral tubercles, such that margins of head behind eye are not rounded; anterior pair of mesonotal spines short and blunt; frontal lobes evenly rounded.

Natural History

I know this species from three collections:

A Winkler sample from Refugio Eladio in the Penas Blancas Valley east of Monteverde.

A Winkler sample from Sirena in Corcovado National Park.

A series of workers from San Pedrillo in Corcovado National Park. The workers were carrying insect feces to a nest entrance in the soil. A dirt mound, 10cm across, was adjacent to but separate from the actual, cryptic nest entrance.

Page author:

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

Date of this version: 5 January 2004.
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