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Pheidole mixtecaHNS new species

Types Mus. Comp. Zool. Harvard.

Etymology After Mixtec, the Amerindian people of Oaxaca.

diagnosis Species similar in various traits to oaxacanaHNS, scabriventrisHNS, and tragicaHNS, and distinguished as follows. Major: yellow; pronotum bilobed in dorsal-oblique view; propodeal spine short, nearly vertical in dorsal-oblique view; petiolar node narrow in side view; rugoreticulum present between eye and antennal fossa; postpetiolar node broad and acutely subangular; humerus bearing a small patch of rugulae.

Minor: frontal lobes bulging forward in side view; propodeal spine short and nearly erect. Measurements (mm) Holotype major: HW 0.90, HL 1.00, SL 0.58, EL 0.16, PW 0.44. Paratype minor: HW 0.46, HL 0.56, SL 0.46, EL 0.08, PW 0.32.

Color Major: head and mandibles reddish yellow, gaster brownish yellow; other appendages medium yellow.

range Known only from the type series.

Biology Collected in the leaf litter of oak woodland.

figure Upper: holotype, major. Lower: paratype, minor. MEXICO: 30 km south of Juchatengo, Oaxaca, 650 m (Stewart B. Peck). Scale bars = 1 mm.