A uninominal nomenclature, as proposed by Michener (1963), is applied as a practical experiment to the names of the species of the tribe Paracolletini (Hymenoptera: Apoidea). A new classification of the 332 species listed in this tribe would result, using the binominal system, in 288 new combinations and 16 homonyms requiring new specific names. None of these 304 new names (and combinations) would be necessary with the uninominal system. The proposed system allows modifications of classifications and the use of different, competing classifications by different specialists without influencing the names of the organisms being classified. It also allows flexibility, e. g., abandonment of the mutually exclusive nature of taxa, when desirable. In the future, studies of affinities should be reflected in new classifications without the delay, limited application, and conservativeness resulting from the knowledge that classificatory changes cause undesirable instability of nomenclature.