FIGURES 11–19. Centris species from the Caatinga region. 11, C in A new species of Centris (Paracentris) Cameron, 1903 from northeastern Brazil, with a key for the Centris species of the Caatinga region (Hymenoptera: Apidae)

FIGURES 11–19. Centris species from the Caatinga region. 11, C. aenea (female). 12, C. aenea (normal male). 13, C. aenea (metander). 14, C. caxiensis (female). 15, C. caxiensis (male). 16, C. decolorata (female). 17, C. decolorata (male). 18, C. pulchra (female). 19, C. pulchra (male). Scale bar 1 mm.