Larocanthidium gen.n. is proposed to include ten new species of Anthidiinae from Brazil characterized by the mandibles of the females with four little teeth, two apical and two basal connected by a large smooth area and by the bissinuate or straight lamela projected only dorsally on the sixth tergum and the two apical carinate lobes on the seventh tergum of the male.
Apoidea; Megachilidae; Anthidiinae; Larocanthidium; new genus; taxonomy; Neotropical