Pheidole scapulata ^HNS Santschi

Pheidole scapulata ^HNS Santschi 1923d: 63.

Types Naturhist. Mus. Basel.

Etymology L scapula, pertaining to the shoulder, allusion unknown.

Diagnosis Closest to monstrosa ^HNS and reclusi ^HNS, distinguished from these and other members of the distorta ^HNS group as follows. Major: entire dorsum of head to the level of the posterior clypeal border of the clypeus completely and densely rugoreticulate; upper fourth of side of head longitudinally carinulate; all but anterior strip of premesonotal dorsum, and all of dorsa of petiolar and postpetiolar nodes rugoreticulate.

Minor: humerus in oblique-dorsal view right-angulate; head heavily sculptured, with extensive rugoreticulum mesad and posterior to eyes; mesonotal dorsum rugoreticulate.

Measurements (mm) Major (Tucuman, Argentina)): HW 1.62, HL 1.98, SL 0.74, EL 0.24, PW 1.06.

Lectotype minor: HW 0.80, HL 0.78, SL 0.62, EL 0.16, PW 0.52.

Color Major: medium reddish brown (possibly a callow) to dark brown.

Minor: concolorous medium brown except for gaster, which is dark brown.

Range Cordoba, Salta, and Tucuman in Argentina; and Santa Cruz in Bolivia.

Biology Unknown.

Figure Upper: major (associated with minor compared with lectotype minor), Tucuman, Argentina. Lower: lectotype, minor, Alta Gracia, Cordoba, Argentina. Scale bars = 1 mm.