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Types Mus. Comp. Zool. Harvard.
Diagnosis A member of the transversostriataHNS group, closest to gnomusHNS of Ecuador, distinguished in the major by the broad swath of transverse carinulae covering the posterior third of the head, but unlike those of gnomusHNS, they are less extensive and do not curve downward to the sides; also, the pronotum is completely smooth and shiny and lacks anterior carinulae. Measurements (mm) Holotype major: HW 0.72, HL 0.88, SL 0.40, EL 0.10, PW 0.34. Paratype minor: HW 0.38, HL 0.44, SL 0.40, EL 0.06, PW 0.24. Color Major and minor: concolorous clear medium yellow.
range Known from the type locality and from the Pirelli Plantation (Iriboca), near Belem, Para, Brazil (P. F. Darlington).
Biology At the type locality, Stefan Cover and John E. Tobin found five colonies in terra firme forest and woodland transitional to seasonally flooded forest, nesting variously in clay soil and, in one instance, a hollow rotten stick on the forest floor.
Figure Upper: holotype, major. Lower: paratype, minor. PERU: Cuzco Amazonico, 15 km northeast of Puerto Maldonado, Madre de Dios (Stefan Cover). Scale bars = 1 mm.
Found most commonly in these habitats: 2 times found in wet forest, 2 times found in rock savana, 1 times found in second-growth rainforest.
Found most commonly in these microhabitats: 3 times at bait, 1 times sifted litter (leaf mold, rotten wood), 1 times ex sifted litter, rotten wood.
Collected most commonly using these methods: 2 times baiting, 2 times Winkler, 1 times bait.
Elevations: collected from 81 - 650 meters, 366 meters average
Type specimens: paratype Pheidole scolioceps: jtlc000016524