Skleroprotopus incisodentatus sp. nov.. paratypes from Cave Lingjiu Dong. A, G female paratype; B–I male paratype. A, B gnathochilarium; C legs 2 with penis, posterior view; D legs 1, anterior view; E anterior gonopods, anterior view; F legs 7, anterior view; G vulvae, lateral view; H posterior gonopods, anterior view; I anterior gonopods, posterior view. Abbreviations: a5, a6, antennomeres 5, 6; cp, coxal process; cx, coxa; f, flagellum; h, hump; ll, lamella lingualis; ml, membranous lobe; op, operculum; pn, penis; pr, promentum; r, remnant; t1–t4, telopoditomeres 1–4; te, telopodite. Scale bars: 0.2 mm.

 
 
  Part of: Chen R, Zhao Y, Golovatch S, Liu W-X (2024) Molecular phylogenetic and morphological studies reveal increased species diversity in the millipede genus Skleroprotopus Attems, 1901 in China (Julida: Mongoliulidae). Arthropod Systematics & Phylogeny 82: 659-691. https://doi.org/10.3897/asp.82.e136751