Anthidiellum

Anthidiellum are small, robust, and cosmopolitan megachilids. Both sexes have a black cuticle with bold yellow, white, or cream-colored markings that gives them the appearance of tiny wool-carder bees (Anthidium). Like other megachilids, the females have a whitish ventral brush. Males are similar in appearance to females but with almost completely light-colored faces and different eye color. Unlike similar species, the males do not have spines at the tip of the abdomen. They are solitary bees that build free-standing nests aboveground, usually on twigs, branches, and rocky surfaces. They use resin as constructions material for their brood cells.