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Full Range: Costa Rica to southern Brazil and Paraguay, but appears largely absent from Amazonia.
Costa Rican Range: lowland to mid-elevation sites on Atlantic and Pacific slopes.
Strumigenys fridericimuelleri Forel 1886:213. Syntype worker: Brazil, [Santa Catarina?] Itajahy (W. Mueller).
Later moved to Smithistruma, then Pyramica. See Bolton (2000) for complete synonymy.
Members of the genus are all predaceous, with a static pressure mode of attack (Bolton 1999).
In Costa Rica, this species occurs in wet forest habitats. It is apparently rare and/or difficult to collect. Most collections have been from mid-elevation wet forest (around 500m) on either slope. I have twice collected the species using Winkler bag extraction from sifted forest floor leaf litter. One collection was from Carara and the other from Hitoy Cerere. These were the only occurrences among dozens of sifted litter samples that I have examined from throughout Costa Rica. I also collected a small colony in Braulio Carrillo National Park. It was in a rotten stump at the forest edge.
Bolton, B. 1999. Ant genera of the tribe Dacetonini (Hymenoptera: Formicidae). Journal of Natural History 33:1639-1689.
Bolton, B. 2000. The ant tribe Dacetini, with a revision of the Strumigenys species of the Malagasy Region by Brian L. Fisher, and a revision of the Austral epopostrumiform genera by Steven O. Shattuck. Memoirs of the American Entomological Institute 65:1-1028.
Forel, A. 1886. Einige Ameisen aus Itajahy (Brasilien). Mitt. Schweiz. Entomol. Ges. 7:210-217.
Alto Paraná, Amambay, Canindeyú, Itapúa, Ñeembucú (ALWC, BMNH, INBP, LACM, MHNG). Literature records: Alto Paraná, Amambay, Ñeembucú (Bolton 2000).