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Costa Rica, Trinidad, Guyana (type locality), Brazil (Amazonian Brazil and Mato Grosso), Ecuador, Peru. Costa Rica: Atlantic slope.
This species is found in mature wet forest habitats. It nests in the low arboreal zone, in dead sticks, in dead cavities in live plants, and as an occasional opportunist in domatia of myrmecophytes.
Types Mus. Comp. Zool. Harvard.
Major: in side view frontal lobes project forward as equilateral triangles; humeri angulate, seen from above projecting slightly beyond the rest of the pronotum below it; propodeal spiracle very large, its diameter greater than the base of the propodeal spine in side view; postpetiole oval from above; head bicolored (see Color below); all of frontal lobes and space between frontal carinae filled with carinulae, which reach halfway from the level of the eyes to the level of the occiput.
Minor: propodeal spiracle large, about as wide as the base of the propodeal spine; humerus in dorsal-oblique view angulate; postpetiolar node from side well developed.
measurements (mm) Syntype major: HW 0.96, HL 1.20, SL 0.46, EL 0.10, PW 0.52. Syntype minor: HW 0.52, HL 0.58, SL 0.52, EL 0.08, PW 0.32.
color Major: anterior half of dorsum of head yellow, contrasting with yellowish brown posterior half, also with yellowish brown mid-clypeus, frontal triangle, and antennal fossae; body yellowish brown. Minor: concolorous yellowish brown.
Range Recorded from Costa Rica; Trinidad; Guyana (type locality); Mato Grosso, Brazil; and Amazonian Brazil, Ecuador, and Peru.
biology Longino (1997) found two colonies in primary rainforest on the Costa Rican Atlantic slope, one nesting in a rotting cavity of a live branch, the other in a dead stick. Douglas Yu (specimen data) discovered a colony in Peru in cavities of the myrmecophyte Cordia nodosa. Colonies have been found in rainforest nesting in dead sticks and in the cavities of live myrmecophytes of the genera Cordia and Piper. Winged reproductives have been collected in nests in different localities from April to November.
Figure Upper: syntype, major. Lower: syntype, minor. GUYANA: Kartabo (W. M. Wheeler). Scale bars = 1 mm.
Found most commonly in these habitats: 15 times found in 2º lowland rainforest, 14 times found in montane wet forest, 9 times found in mature wet forest, 7 times found in tropical rainforest, 4 times found in tropical moist forest, 1 times found in Primary forest at river edge, 1 times found in LEP 3200, 1 times found in 2º lowland tropical rainforest, 1 times found in CC 1200 m., 1 times found in tropical rainforest, old second growth, ...
Found most commonly in these microhabitats: 21 times ex sifted leaf litter, 14 times at bait, 4 times Sobre Vegetacion, 1 times in rotten cavity in live branch, 1 times Primary forest, 1 times LOC300. nest in dead stick., 3 times Hojarasca, 1 times twig nest, 2 times copa de árbol, 2 times beating vegetation, 2 times beating veg., ...
Collected most commonly using these methods: 18 times miniWinkler, 14 times Baiting, 5 times Malaise, 4 times Beating, 4 times Sweeping, 3 times Fogging, 1 times Lure/Bait, 3 times Mini Winkler, 2 times Ex rotten log, 2 times Winkler, 2 times flight intercept trap, ...
Elevations: collected from 30 - 540 meters, 188 meters average