Pheidole obscurithorax Naves, 1985

Guerrero, Roberto J., García, Emira & Fernández, Fernando, 2022, The Pheidole Westwood, 1839 ants (Formicidae: Myrmicinae) in Colombia: new records including two species with remarkable morphology, Zootaxa 5154 (3), pp. 319-332 : 325

Pheidole obscurithorax Naves, 1985

Minor worker measurements (n=1): HW 0.71, HL 0.82, SL 1.10, EL 0.20, WL 1.12, PSL 0.02, PTW 0.14, PPW 0.20, CI 86, SI 156, PSLI 2, PPI 143.

Soldier measurements (n=3): HW 1.63–1.73, HL 1.69–1.78, SL 0.98–1.10, EL 0.24–0.27, WL 1.47–1.65, PSL 0.06–0.10, PTW 0.25–0.29, PPW 0.35–0.47, CI 95–98, SI 61–67, PSLI 3–6, PPI 138–160.

Material examined. Colombia: 1 soldier, Meta, San Martin, Reserva Natural el Caduceo, km 4.5 vía San Francisco , 3.6655, -73.6583, alt. 309m, 10-14. Mar. 2014. Coll. T. Velasco, pitfall [MPUJ]; 1 minor worker, same data except by Coll. L. Rodríguez [MPUJ] ; 1 soldier, Puerto Gaitán, Altamira, Club los Llaneros , alt. 140m, 22. Oct. 2006. Coll. K. Avellaneda, D. Rincón & D. Rodríguez, pitfall [MPUJ] ; 1 soldier, Puerto López, La Libertad , alt. 366m, Oct. 2006 Coll. J. Arce [MPUJ] .

Comments. This is a new record for Colombia, although previously known in several other South American countries including French Guiana, Ecuador, Peru, Bolivia, Brazil, Paraguay, Uruguay, Argentina. The species is exotic in the USA ( Wilson 2003). Pheidole obscurithorax soldiers from Colombia are identical to the holotype from Argentina.