Pheidole grex, Wilson, E. O., 2003

Wilson, E. O., 2003, Pheidole in the New World. A dominant, hyperdiverse ant genus., Cambridge, MA: Harvard University Press : 430

Pheidole grex new species

Types Mus. Comp. Zool. Harvard.

Etymology Gr grex , herd or flock.

Diagnosis A medium-sized, slender, yellow species placed in the flavens group (but with habitus intermediate to the punctithorax group), whose major has completely foveolate dorsum of the head (exclusive of central clypeus and frontal triangle) and mesosoma; carinulae limited to the anterior two-thirds of the head capsule; profde of the posterior half of the head flat in side view; relatively long, slender, nearly erect propodeal spines; low but distinct mesonotal convexity; and low postpetiolar node in side view.

Minor: foveolation as in major; sparse, paired hairs on mesonotal dorsum; and short, erect propodeal spines that curve forward. Somewhat similar to humida , but different in many details, as figured.

Measurements (mm) Holotype major: HW 0.94, HL 1.08, SL 0.60, EL 0.16, PW 0.52.

Paratype minor: HW 0.54, HL 0.58, SL 0.52, EL 0.10, PW 0.16.

Color Major: concolorous dark yellow.

Minor: concolorous medium yellow.

Range Known from Cundinamarca and Meta provinces in Colombia.

Biology Unknown.

Figure Upper: holotype, major. Lower: paratype, minor. COLOMBIA: Susumuco, Bogota-Villavicencio, Cundinamarca, Km 88, 1100 m (William L. and Doris E. Brown). Scale bars = 1 mm.