Mielkeanthidium, gen.n. with long preepisternal carina on the mesepistemum is proposed for two species from Southern Brazil: Mielkeanthidium nigripes, sp.n. and Mielkeanthidium rubripes, sp.n. The females are characterized by the absence of the arolia and of the subbasal tooth of the mandibles, the males by the two large carinated lobes on the apical teigum.
Apoidea; Megachilidae; Anthidiinae; Mielkeanthidium; taxonomy