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types Mus. Comp. Zool. Harvard.
Etymology Named after Paulo S. Oliveira, distinguished Brazilian myrmecologist and ecologist.
Major: brown; rugoreticulum on head limited to space between eye and antennal fossa on each side, preceded anteriorly by longitudinal carinulae and posteriorly by rugulae that travel from the frontal lobes to the side of the head; rear half of ventral side of head smooth; nadir of occipital concavity moderate; propodeal spines reduced to denticles; vertex smooth. Minor: propodeal spines reduced to denticles; occiput narrow, with nuchal collar. Measurements (mm) Holotype major: HW 1.38, HL 1.54, SL 0.94, EL 0.22, PW 0.66. Paratype minor: HW 0.60, HL 0.74, SL 0.86, EL 0.14, PW 0.40.
color Major: body light brown except for anterior fourth of head capsule, which is brownish yellow, and gaster, which is dark brown.
Minor: body light brown, appendages light brown, tending toward yellowish brown.
Range Known from the type locality; and from near Villavicencio, Meta; and from Mocoa, Putumayo, 610 m (Charles Kugler). The record of P. oliveirai recorded by Fernandes et al. (1994) from San Antonio de Posse, Sao Paulo, is in error, due to my own misidentification. The species they studied is actually P. oxyopsHNS, a member of the diligensHNS group (q.v.).
Biology The Cundinamarca and Meta series were collected from steep forested slopes.
Figure Upper: holotype, major. Lower: paratype, minor. COLOMBIA: Bogota-Villavicencio Highway, Km 79, Cundinamarca (W. L. Brown and i. de Polonia). Scale bars = 1 mm.
Found most commonly in these habitats: 4 times found in montane wet forest.
Found most commonly in these microhabitats: 3 times nest in clay bank, 1 times nest in soil.
Collected most commonly using these methods: 4 times search.
Elevations: collected from 1530 - 1560 meters, 1556 meters average
Type specimens: paratype Pheidole oliveirai: jtlc000016476