Bumblebee Species found on several Barnes Tallgrass Prairie Remnants, Racine Co., WI in 2023
In numerous surveys conducted at Barnes Prairie, Racine Co from early June through mid- September 2023, seven species of bumblebees were observed: Bombus affinis, B. bimaculatus, B. borealis, B. fervidus, B. griseocollis, B. impatiens and B. rufocinctus. A summary of sightings for each of these bumblebees, including forage plants, follows.
Bombus affinis, rusty-patched bumblebee
Dates seen: July 28, 2023; August 1, 2023
Forage plants: wild bergamot, purple coneflower, Culver’s root
Bombus bimaculatus, two spotted bumblebee
Dates seen: May 30, 2023: June 5, 2023; June 10, 2023; July 11, 2023; August 10, 2023
Forage plants: Virginia waterleaf, Carolina rose, thistle, wild bergamot, purple coneflower
Bombus borealis, northern amber bumblebee
Date seen: August 1, 2023
Forage plant: wild bergamot
Bombus fervidus, golden northern bumblebee
Dates seen: June 6, 2023; July 3, 2023; July 17, 2023; July 20, 2023; July 28, 2023
Forage plants: hoary puccoon, purple clover, teasel, wild bergamot, thistle
Bombus griseocollis, brown-belted bumblebee
Dates seen: June 30, 2023; July 28, 2023; Aug. 1, 2023; Aug. 6, 2023; Aug. 12, 2023
Forage plants: lance-leaved coreopsis, common milkweed, wild bergamot, purple coneflower, thistle, prairie blazing star, goldenrod
Bombus impatiens, common eastern bumblebee
Dates seen: June 1, 2023; June 30, 2023; August 6, 2023; August 12, 2023; Aug 21, 2023; September 16, 2023
Forage plants: purple clover, common milkweed, wild bergamot, goldenrod, aster
Bombus rufocinctus, red-belted bumblebee
Dates seen: June 1, 2023; August 1, 2023; August 9, 2023; August 16, 2023
Forage plants: Virginia waterleaf, purple coneflower, gray-headed coneflower, black-eyed Susan, Culver’s root
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