FIGURES 20–28. Centris species from the Caatinga region. 20, 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 20–28. Centris species from the Caatinga region. 20, C. cf. spilopoda (female). 21, C. varia (female). 22, C. varia (male). 23, C. varia (female). 24, C. varia (male). 25, C. tarsata (female). 26, C. tarsata (male). 27, C. trigonoides (female). 28, C. trigonoides (male). Scale bar 1 mm.