Naupactus schapleri is very similar to N. tarsalis in size, general body shape and color pattern, and mainly differentiates because it has flat eyes. The integument is almost completely denuded of scales, except those that form a pair of yellow stripes along margins of pronotum and 5° to 7° elytral intervals.
Antennae are very slender and long; pronotum is truncate-conical, slightly punctate on disc, with strongly curved flanks and strongly bisinuate beveled base; elytra show strongly bisinuate and thickened base, broad humeri, flat intervals and striae with large punctures; denticles on inner margin of front tibiae are small and corbels of hind tibiae are slender.
Males are more slender than females.
Unknown.
It is associated with native vegetation of the Cerrado and Chacoan biogeographic provinces.