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Types Mus. La Plata, Buenos Aires.
Etymology Named after the country of origin.
diagnosis An extreme workerless parasite of Pheidole nitidulaHNS. The queen possesses a trait unique within the ants: the antenna is 10-segmented, with a well-developed, 1-segmented club. Also, the body is somewhat pupiform and the mandibles are reduced to toothless straps.
measurements (mm) Syntype queen: according to Bruch (1932), the total length of a queen in the type series is 1.7 mm. Color Head, especially vertex, brownish yellow; mesosoma, waist, and gaster (except the apex) grayish brown..
range Known only from the type locality.
figure Syntype, queen. (Adapted from Bruch 1932.) ARGENTINA: Alta Gracia (La Granja), Sierra de Cordoba (Carlos Bruch). Scale bar = 1 mm.