Pheidole arachnion Wilson, 2003

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 : 321

Pheidole arachnion Wilson, 2003

Minor worker measurements (n= 1): HW 0.65, HL 0.65, SL 0.69, EL 0.10, WL 0.80, PSL 0.02, PTW 0.10, PPW 0.16, CI 100, SI 106, PSLI 303, PPI 160.

Soldier measurements (n= 1): HW 1.59, HL 1.65, SL 0.65, EL 0.14, WL 1.20, PSL 0.14, PTW 0.24, PPW 0.49, CI 96, SI 41, PSLI 8, PPI 208.

Material examined. Colombia: 1 minor worker, 2 soldiers, Caquetá, Belén de los Andaquíes , 1.6817, -75.9047, 25. Jan. 2017. Coll. D. Castro [ICN] .

Comments. Pheidole arachnion is a new record for Colombia and South America. This species was known only from Nicaragua and Costa Rica ( Wilson 2003). The only studied specimen of the subcaste soldier of Pheidole arachnion from Colombia differs from those from Costa Rica by the face having a strong rugoreticulation, areolate and opaque surface, with small patches smooth and shiny between the frontal carinae.