Oxaea mourei, sp.n is described, from Paraná State, Brazil. This new species is most closely related to O. schwarzi. They may be easily distinguished from each other since the hairs in O. mourei are yellow-golden while those of O. schwarzi are mostly black. The eyes of the male in O. schwarzi are strongly convergent above and those of O. mourei are weakly diverging above.
Oxaea; Andrenidae; Hymenoptera; Taxonomy