Fig. 6. Flower biomechanics. A–E, Flowers with broad, slender, arcuate viscidia that are fixed on the scutellum of hymenopteran pollinators: A, Bombus brasiliensis with pollinarium of Bifrenaria harrisoniae; B, Trigona worker dislodging a pollinarium of M. leucaimata; C, Trigona worker removing a pollinarium of M. picta; D, vespidae wasp with two pollinaria of M. gracilis; E, Trigona worker with pollinarium of M. brasiliensis. F, Ponerinae ant with two pollinaria of M. parviflora, a species with rounded viscidium.