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Bombus rufocinctus
red-belted bumblebee
Bombus rufocinctus, commonly known as the red-belted bumblebee, is a North American bumble bee species characterized by striking color polymorphism in abdominal patterning. Queens measure 16-18 mm, workers 11-12 mm, and males 12-13 mm. The species inhabits wooded areas, urban parks, and gardens across Canada and the western, midwestern, and northeastern United States. Males exhibit perching behavior and possess cephalic labial glands that secrete complex chemical mixtures likely involved in mating signaling. Nests are typically constructed on or above ground level.