Pheidole quadriceps, Wilson, E. O., 2003

Wilson, E. O., 2003, Pheidole in the New World. A dominant, hyperdiverse ant genus., Cambridge, MA: Harvard University Press : 491

Pheidole quadriceps new species

types Mus. Comp. Zool. Harvard.

etymology L quadriceps , square-headed, referring to head shape in frontal view.

Diagnosis a medium-sized, yellow member of the flavens group whose major is distinguished by its square head shape in full-face view, angulate profile of the mesonotal convexity, and large propodeal spines.

Similar to carinata of montane Costa Rica but differs in the major by its much longer propodeal spine, more extensive sculpturing on the head, lack of a rugoreticulum on the mesosoma, and color; and in the minor by the absence anywhere of rugoreticula; and by color.

See also the less similar kuna , obtusopilosa , rectisentis , scabriventris , and termitobia .

Measurements (mm) Holotype major: HW 0.90, HL 0.92, SL 0.46, EL 0.08, PW 0.44.

Paratype minor: HW 0.44, HL 0.50, SL 0.42, EL 0.06, PW 0.28.

Color Major: body light brownish yellow, mandibles dark brownish yellow.

Minor: concolorous medium yellow.

Range Known only from the type locality.

biology Collected in second-growth forest.

Figure Upper: holotype, major. Lower: paratype, minor. COLOMBIA: Providencia Biological Station, Zona Buenos Aries, Antioquia, 600-800 m (Charles Kugler). Scale bars = 1 mm.