Key to the species of Centris of the hyptidis group

1. Metasoma with bands of orange pilosity; hindleg with yellowish pubescence; clypeus in both sexes with a triangular black spot. Brazil (GO) ........................................................................................................... Centris thelyopsis n. sp.

- Pilosity of metasoma predominantly black (except T1, with band of yellow pilosity and the last two segments with white pilosity); hindleg with predominantly black pubescence; clypeus of female with triangular spot, clypeus of male entirely yellow...................................................................................................................................................... 2

2. Female: fore elaiospathe with four secondary posterior giant setae beside the primary anterior comb; T4 with predominantly black pilosity sometimes with some yellow bristles intermixed. Male: T1 with uninterrupted band of yellowish pilosity; F1 3.2 times longer than F2; apical margin of T4 with a complete narrow band of plumose hairs. Argentina, Paraguay, Brazil (MS) ................................................................................................... Centris hyptidoides

- Female: fore elaiospathe without secondary posterior giant setae beside the primary anterior comb; T4 with yellowish pilosity. Male: T1 with band of yellowish pilosity generally interrupted in the middle; F1 2.9 times longer than F2; apical margin of T4 with narrow band of plumose hairs restricted to lateral portions of tergum. Brazil (BA, CE, GO, MG, PE, PB, RN, SE, TO) ........................................................................................................... Centris hyptidis