A new millipede genus and species of the tribe Pachyiulini from the Caucasus (Diplopoda, Julida, Julidae) Author Evsyukov, Aleksandr P. https://orcid.org/0000-0001-5521-7563 Don State Technical University, Department of Biology and General Pathology, Rostov-on-Don, Russia aevsukov@mail.ru Author Vagalinski, Boyan https://orcid.org/0000-0002-4661-8952 Institute of Biodiversity and Ecosystem Research at the Bulgarian Academy of Sciences, Sofia, Bulgaria Author Zabiyaka, Igor Y. https://orcid.org/0000-0001-6759-549X Don State Technical University, Research and Education Center " Materials ", Rostov-on-Don, Russia Author Sadyrin, Evgeniy V. https://orcid.org/0000-0002-5395-3310 Don State Technical University, Research and Education Center " Materials ", Rostov-on-Don, Russia text ZooKeys 2022 2022-04-19 1097 47 63 http://dx.doi.org/10.3897/zookeys.1097.81792 journal article http://dx.doi.org/10.3897/zookeys.1097.81792 1313-2970-1097-47 18F467AF6AC6441297945A004A671F5B F648624DC6F95540BA3A31A28DC3FD4F Genus Bellatoiulus gen. nov. Type species. Bellatoiulus golovatchi gen. et sp. nov., by present designation. Diagnosis. A genus of the julid tribe Pachyiulini , distinguished from all contribal genera by the unique presence of a lateral process on the opisthomere, as well as by the following combination of gonopodal and external somatic characters: promere with mesal ridge distally extending in a strong process, caudal face without apical denticles/ridges; opisthomere without anterior and caudal lamellae or these being vestigial, mesomeral process well-differentiated, crest-like, solenomere with a deep and narrow apical fovea; ommatidia absent, mandibular stipites in males not expanded, vertigial and metazonal setae present, pre-anal ring with an epiproct. Name. Derived from the Latin bellator meaning "soldier" , "warrior" , after the remarkably "armed" appearance of the gonopods including the club-like mesal and lateral processes of the promere and the opisthomere, respectively, and the apically serrated mesomeral process; plus Julus , the type genus of the family Julidae . Masculine.