Biome variation, not distance between populations, explains morphological variability in the orchid bee Eulaema nigrita (Hymenoptera, Apidae, Euglossini) - Costa, Claudinéia Pereira; Machado, Clycie Aparecida da Silva; Santiago, Wellyngton Matheus Souza; Dallacqua, Rodrigo Pires; Garófalo, Carlos Alberto; Francoy, Tiago Mauricio (Apidologie, 2020)