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Types Mus. Comp. Zool. Harvard.
Major: frontal lobes, sides of head, most of vertex, and pronotal dorsum rugoreticulate; median ocellus present; antennal scape attains occipital border; head bicolored (see Color below).
Minor: all of head, mesosoma, and waist foveolate and opaque; pronotal dorsum rugoreticulate; midclypeus with scattered short rugulae; occiput strongly constricted but lacks nuchal collar.
measurements (mm) Holotype major: HW 1.18, HL 1.20, SL 0.96, EL 0.20, PW 0.62. Paratype minor: HW 0.64, HL 0.74, SL 0.94, EL 0.16, PW 0.42.
color Major: body medium brown; head bicolored, with anterior fourth dark yellow (except for clypeus and frontal triangle, which are medium brown); appendages dark yellow.
Range Known from the type locality, and from the La Perla-Rancho Somecla road on Mt. Orizaba, Veracruz, 1800-2000 m (E. O. Wilson).
Biology This species occurs in transitional tropical-temperate cloud forest. One colony collected at Rancho Cielo by P. S. Ward was in a rotten log. Another I found on Mt. Orizaba was under a large rock in hardwood forest dominated by Liquidambar and Carpinus, with a Cyafhea-melastome understory. Winged queens were present in a nest at Rancho Cielo on 23 July.
figure Upper: holotype, major. Lower: paratype, minor. MEXICO: Rancho del Cielo, Sierra de Guatemala, Tamaulipas, 1070 m (Cornell University Expedition group, 1965). Scale bars = 1 mm.
Found most commonly in these habitats: 86 times found in cloud forest, 19 times found in montane wet forest, 1 times found in mixed oak.
Found most commonly in these microhabitats: 86 times at bait, 12 times ex sifted leaf litter, 7 times beating vegetation, 1 times ex forest litter.
Collected most commonly using these methods: 86 times baiting, 9 times miniWinkler, 7 times beating, 3 times maxiWinkler, 1 times Berlese.
Elevations: collected from 1070 - 1730 meters, 1445 meters average
Type specimens: paratype Pheidole nubicola: jtlc000016473