Bolbelasmus (Bolbelasmus) zagrosensis (Coleoptera: Scarabaeoidea: Bolboceratidae), a new species from Iran, along with an updated key to the western Palaearctic species of the subgenus Author Sommer, David 0000-0003-4519-9677 Department of Zoology, Faculty of Science, Charles University, Viničná 7, CZ- 128 43 Praha 2, Czech Republic. dejv. sommer @ gmail. com; https: // orcid. org / 0000 - 0003 - 4519 - 9677 dejv.sommer@gmail.com Author Hillert, Oliver Kieferndamm 10, D- 15566 Schöneiche bei Berlin, Germany. Author Hrůzová, Lucie 0000-0003-4519-9677 Department of Zoology, Faculty of Science, Charles University, Viničná 7, CZ- 128 43 Praha 2, Czech Republic. dejv. sommer @ gmail. com; https: // orcid. org / 0000 - 0003 - 4519 - 9677 dejv.sommer@gmail.com Author Král, David 0000-0003-4519-9677 Department of Zoology, Faculty of Science, Charles University, Viničná 7, CZ- 128 43 Praha 2, Czech Republic. dejv. sommer @ gmail. com; https: // orcid. org / 0000 - 0003 - 4519 - 9677 dejv.sommer@gmail.com text Zootaxa 2021 2021-01-29 4920 3 380 394 journal article 8333 10.11646/zootaxa.4920.3.4 37eefe05-4ff9-4762-a724-07deef527831 1175-5326 4478107 845CF8B2-07CD-45DC-8128-2EA56C825356 Bolbelasmus ( Bolbelasmus ) zagrosensis Sommer, Hillert, Hrůzová & Král , new species ( Figs. 1A , 2A , 3A , 4 A–B, 5A, 6A–C, 9, 10) Bolbelasmus nireus : Keith 2005: 51 , fig. 1 (distribution); Montreuil 2017: 260 (distribution). Bolbelasmus nireus [partim, populations from Iran ]: Arnone & Massa 2010: 412 (distribution); Miessen 2011: 110 (distribution); Hillert et al . 2016: 246 (distribution); Nikolajev et al . 2016: 33 (catalogue); Schoolmeesters 2020 (online catalogue).