Bombus (Pyrobombus) johanseni Sladen, 1919, a valid North American bumble bee species, with a new synonymy and comparisons to other " red-banded " bumble bee species in North America (Hymenoptera, Apidae, Bombini) | doi.page
Bombus (Pyrobombus) johanseni Sladen, 1919, a valid North American bumble bee species, with a new synonymy and comparisons to other " red-banded " bumble bee species in North America (Hymenoptera, Apidae, Bombini)