Number of occupied counties and last year observed for each of the 29 bumble bee species (Bombus spp.) in South Dakota. Panel a shows the number of counties (out of 66) that a bumble bee species has been either observed (blue), collected (red), or both (grey). Panel b shows the last year each bumble bee species was collected and/or observed in South Dakota.

  Part of: Martens AP, Johnson PJ, Beckendorf EA, Hesler LS, Daniels JD, Roeder KA (2022) A checklist of South Dakota bumble bees (Hymenoptera, Apidae). Journal of Hymenoptera Research 94: 271-286.