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Types Mus. Comp. Zool. Harvard.
Etymology L terribilis, dreadful, frightful.
Diagnosis Similar in various traits to the species listed in the heading above, differing as follows.
Major: propodeal spine stout, about half as long as propodeal basal face; rear third of head smooth, with scattered foveae; a loose rugoreticulum between eye and antennal fossa on each side; frontal lobes and vertex carinulate; anterior half of promesonotum rugoreticulate, rear half smooth; postpetiolar dorsum foveolate and carinulate; gaster entirely smooth.
Minor: occiput and sides of head to level of eyes rugoreticulate; lower half of mesopleuron loosely rugose, and dorsum foveolate only, with rest of promesothorax rugoreticulate.
Measurements (mm) Holotype major: HW 1.80, HL 1.86, SL 0.94, EL 0.20, PW 0.90. Paratype minor: HW 0.76, HL 0.70, SL 0.82, EL 0.14, PW 0.50.
Color Major: body, antennae, mandibles medium reddish brown; legs brownish yellow.
Minor: mesosoma, waist, and appendages light to medium reddish brown; head and gaster dark reddish brown.
Range Known from the type locality, and 35 km south-southeast of Flor de Oro, Santa Cruz, Bolivia, 450 m (P. S. Ward).
Figure Upper: holotype, major. Lower: paratype, minor. SURINAME: Voltzberg Camp, Raleigh-Vallen-Voltzberg Reserve, 90 m (James Carpenter and D. Trail). Scale bars = 1 mm.
Elevations: collected at 90 m