A key to the subgenera of the orchid bee genus Euglossa (Hymenoptera: Apidae)

The infrageneric classification of the orchid bee genus Euglossa Latreille (Apinae: Euglossini) has historically comprised six or seven subgenera and a plethora of species groups, many of which are demonstrably monophyletic. Nonetheless, challenges remain, particularly in relation to the subgenus Glossurella Dressler. Herein a new key to subgenera is presented and four problematic species groups of Glossurella are removed to separate subgeneric entities: Eurhytisma subgen. n., Glossurodes subgen. n., Parisoglossa subgen. n., and Trachyglossa subgen. n.