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)

Examples of “red-banded” bumble bees. A Bombus huntii female. Top arrow shows the complete yellow hair patch on the rear of the thorax (scutellum), bottom arrow shows the completely black tegum 5 B B. ternarius female. Top arrow shows the face with both yellow and black hairs, middle arrow shows the entirely yellow anterior area of the thorax, bottom arrow shows the yellow hair patch on the rear of the thorax (scutellum) divided in two by a wedge of black hairs. Photographs by CSS C, D B. ternarius female, from Newfoundland. Arrow in C shows the atypical intermixed black hair on the anterior area of the thorax. Top arrow in D shows the yellow hair patch on the rear of the thorax (scutellum) divided in two by a wedge of black hairs, bottom arrow shows all black tergum 5. Photographs by Carolyn Parsons E B. vancouverensis female (red form). Left arrow shows the pale hair patch on the rear of the thorax (scutellum) divided in two by a wedge of black hairs, right arrow shows the incomplete red band of tergum 2, with black hairs in basal half F B. rufocinctus female (red form). Arrow shows the incomplete red band of tergum 2, being yellow medially in the basal half. Photographs by CSS.