A new species of Centris Fabricius, 1804 is described as C. xanthomelaena (body size 15 mm, forewing length 10.33 mm, head width 5.25 mm, second abdominal tergum width 5.75 mm). The specimens were captured when visiting the yellow flowers of Chamaecrista amiciela (I. & B.) I. & B., Caesalpiniaceae and of Stimaphyllom auriculatum (Cav.) Adr. Juss, Malpighiaceae.
Hymenoptera; Apoidea; Centridini; Centris