Grafanthidium. gen.n. is proposed for three new species from northern Brazil, Grafanthidium amazonense, sp.n. from BR 174 km 70 (near Manaus), Amazonas; Grafanthidium rondonicola, sp.n. from Vilhena, Rondônia, and Grafanthidium paraense, sp.n. from Jacareacanga, Pará. The sixth and seventh terga of the males of these new species are characterized by the large carinate lateral lobes, the seventh with the lobes on the apex. Duckeanthidium cibele, sp.n. from Vilhena. Rondônia is described.
Apoidea; Megachilidae; Grafanthdium; gen.n; Duckeanthidium cibele; sp.n.; taxonomy