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Types Naturhist. Mus. Wien.
Diagnosis Similar to heterothrixHNS, distinguished from it and other PheidoleHNS species by the following combination of traits. Major: entire dorsal surface of head rugoreticulate except for frontal lobes, frontal triangle, clypeus, and anterior genae; humeri rugoreticulate; anterior margin of pronotal dorsum carinulate; all of mesosoma and waist foveolate; postpetiole from above elliptical. Minor: almost all of body except gaster foveolate and opaque; humeri subangulate; propodeal spines moderately long and slender; occipital margin concave; nuchal collar absent.
Measurements (mm) Lectotype major: HW 1.16, HL 1.18, SL 0.54, EL 0.14, PW 0.60.
Paralectotype minor: HW 0.56, HL 0.58, SL 0.50, EL 0.10, PW 0.36.
Color Major: body light reddish brown except for gaster, which is plain medium brown.
Range Recorded from Uruguay; and, in Argentina, the northern and central provinces of Buenos Aires, Cordoba, Jujuy, La Pampa, and Tucuman (Kempf 1972b). I have confirmed a series from Sao Paulo.
Figure Upper: lectotype, major. Lower: paralectotype, minor. URUGUAY (no further locality). Scale bars = 1 mm.
Collected most commonly using these methods: 1 times direct collection.
Elevations: collected at 200 m