A checklist of South Dakota bumble bees (Hymenoptera, Apidae) by Abigail P. Martens, Paul J. Johnson, Eric A. Beckendorf, Louis S. Hesler, Jesse D. Daniels, Karl A. Roeder

“…Specimens or observations were available for >90% of the 66 counties, though they were not distributed evenly as most records came from Pennington, Lawrence, Custer, Brookings, and Day Counties. The five most commonly collected or reported bumble bee species were B. griseocollis (54 counties), B. pensylvanicus (41 counties), B. fervidus (39 counties), B. huntii (27 counties), and B. bimaculatus (25 counties). …”
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