A review of the cavernicolous Trichopolydesmidae (Diplopoda, Polydesmida) from the Carpathian-Balkan arch and the Rhodope Mountains, with descriptions of two new genera and three new species Author Antic, Dragan https://orcid.org/0000-0002-1231-4213 University of Belgrade-Faculty of Biology, Institute of Zoology, Studentski trg 16, 11000 Belgrade, Serbia & Serbian Biospeleological Society, Trg Dositeja Obradovica 2, 21000 Novi Sad, Serbia dragan.antic@bio.bg.ac.rs Author Vagalinski, Boyan Institute of Biodiversity and Ecosystem Research at the Bulgarian Academy of Sciences, 2 Yurii Gagarin Street, 1113, Sofia, Bulgaria Author Stoev, Pavel https://orcid.org/0000-0002-5702-5677 National Museum of Natural History, Bulgarian Academy of Sciences, Tsar Osvoboditel Blvd. 1, Sofia 1000, Bulgaria & Pensoft Publishers, Sofia, Bulgaria Author Akkari, Nesrine https://orcid.org/0000-0001-5019-4833 3 text ZooKeys 2022 2022-04-19 1097 1 46 http://dx.doi.org/10.3897/zookeys.1097.83916 journal article http://dx.doi.org/10.3897/zookeys.1097.83916 1313-2970-1097-1 66F17436DF364FFDB2D3021F14D40D62 6593D2730A295F46B63A738B12E43A22 Balkanodesminus dentatus (Strasser, 1966a) gen. nov., comb. nov. stat. nov. Figs 17L , 18 Bacillidesmus bulgaricus dentatus Strasser, 1966a: 341, figs 16, 17. Bacillidesmus bulgaricus dentatus in part.- Stoev 2007 : 384; Beron 2015 : 80, 411; Bachvarova et al. 2017 : 521. Bacillidesmus dentatus in part.- Ceuca 1992 : 416; Kime and Enghoff 2011 : 71, 262. Bacillidesmus bulgaricus dentatus not Bacillidesmus bulgaricus dentatus - Stoev 2004 : 149. Diagnosis. Differs from Balkanodesminus bulgaricus gen. nov., comb. nov. and B. serbicus gen. nov. et sp. nov. by the presence of shorter (vs. longer) metatergal setae and their greater (vs. smaller) number of rows, as well as by the presence of more complicated (vs. more simplified) gonopods, with biramous (vs. uniramous) distal solenomeral process and larger and denticulated (vs. smaller and smooth) lamella of solenophore. From B. dentatoides gen. nov. et sp. nov., with which it shares similar habitus and similar gonopods, it differs by the presence of more robust (vs. slenderer) solenomere, by short process (vs. triangular tooth) on distal solenomeral process, and by the presence (vs. absence) of additional short subdistal process at distal projection of solenophore. In addition, lateral lamella and basal lobe less developed than in B. dentatoides gen. nov. et sp. nov. Material examined. 1 ♀ , 1 juv. (NMNHS-10814), Bulgaria , Vratsa District , Byala Slatina Municipality , Drashan , Drashanskata peshtera Cave ( type locality), 22.IX.1992 , leg. P. Beron. Distribution. So far, this species is known only from its type locality, Drashanskata peshtera Cave (Fig. 18 ). Remarks. Originally described as a subspecies, Bacillidesmus bulgaricus dentatus . Strasser (1966a) pointed out significant differences in the structure of the gonopod between Bacillidesmus bulgaricus and Bacillidesmus dentatus , as well as differences in body size. However, he did not notice the differences in the length and arrangement of metatergal setae between the two taxa. The descriptions of the two new species below, one of which is similar to Bacillidesmus bulgaricus in body size, habitus and gonopods, and the other one to Bacillidesmus dentatus , clearly indicate the presence of two groups of species within this genus. As mentioned above, Ceuca (1992) , and Kime and Enghoff (2011) treated this taxon as a separate species, Bacillidesmus dentatus , without, however, any formal taxonomic act. For the sake of stability of nomenclature here we formally raise this taxon to the species level and transfer it to the newly established genus as Balkanodesminus dentatus gen. nov., comb. nov., stat. nov.