Maximum likelihood tree constructed with 500 bootstraps for selected taxa of Pyrobombus, with B. (Bombus) terricola as an outgroup. The taxon Bombus johanseni consists of specimens identified in BOLD as Bombus sp. and B. johanseni, in addition to the holotype male of B. interacti.

  Part of: Sheffield CS, Oram R, Heron JM (2020) 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). ZooKeys 984: 59-81.