Enoplopactus Heller was revised by Lanteri (1990c). Its species are recognized by the presence of a line of large denticles on the inner margin of all tibiae.

Enoplopactus brunneomaculatus differentiates by the brown-grey vestiture, lacking the typical yellow stripes along the elytra; the subcylindrical pronotum, more slender near thickened base and with large punctures; and the elytral humeri lacking a tubercle.

Prosopis kuntzei Harms and Prosopis nigra Grisebach (Fabaceae)(Lanteri et al. 2002a).

Associated with vegetation typical of the Chacoan biogeographic province.