Williams, P. H., Altanchimeg, D., Byvaltsev , A., De Jonghe, R., Jaffar, S., Japoshvili, G., … Orr , M. C. (2020). Widespread polytypic species or complexes of local species? Revising bumblebees of the subgenus Melanobombus world-wide (Hymenoptera, Apidae, Bombus). European Journal of Taxonomy, 719(1), 1–120. https://doi.org/10.5852/ejt.2020.719.1107