Paratrechina caeciliae (Forel 1899)

Formicinae, Formicidae, Hymenoptera, Insecta, Arthropoda, Animalia

worker face view

worker lateral view

Additional images: worker scape (small, large).


Costa Rica (type locality), Trinidad, Guianas. Costa Rica: Atlantic lowlands to 600m.


Scape with macrochaetae conspicuous, long, strongly differentiated from appressed pubescence; mesosoma with no appressed pubescence; propodeum inflated; large and gracile, with elongate mesosoma and long scapes and legs.

Similar species: JTL-010.

Natural History

This species inhabitats mature lowland rainforest. It lives in small carton nests constructed beneath individual leaves (Fig. 1). Strap or fan-shaped leaves, such as palms, cyclanths, and aroids, are most often used. In this regard it is similar to several other ant species that build isolated carton nests under leaves: Pheidole fiorii, Camponotus senex, nitidior and chartifex, Technomyrmex fulvus, and Tapinoma sp. No other known species of Paratrechina has this nesting behavior.

The species is common in Project ALAS canopy fogging samples from La Selva Biological Station.

carton nest

carton nest

Figure 1. Nest of Paratrechina caeciliae, Estación El Ceibo, Braulio Carrillo National Park, Costa Rica.

Page author:

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

Date of this version: 19 July 2004.
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