The resin bee subgenus Ranthidiellum in Thailand (Megachilidae, Anthidiini): nesting biology, cleptoparasitism by Stelis, and new species
A new species of <i>Duckeanthidium </i>Moure & Hurd (Megachilidae: Anthidiini) from Colombia, with notes on <i>D. thielei</i> Michener in Panama
