The millipedes (Diplopoda) in Yintiaoling National Natural Reserve, Southwest China Author Chen, Hui-Ming 0000-0002-2449-3036 Institute of Biology, Guizhou Academy of Sciences, Guiyang 550009, China & mei 0601 @ 126. com; https: // orcid. org / 0000 - 0002 - 2449 - 3036 Author Zheng, Chang-Bin 0000-0002-2044-5096 Management Center of Yintiaoling National Nature Reserve, Chongqing 405800, China & 552151709 @ qq. com; https: // orcid. org / 0000 - 0002 - 2044 - 5096 552151709@qq.com Author Jiang, Xuan-Kong 0000-0003-3506-5894 Institute of Biology, Guizhou Academy of Sciences, Guiyang 550009, China & antoma 93 @ gmail. com; https: // orcid. org / 0000 - 0003 - 3506 - 5894 antoma93@gmail.com text Zootaxa 2023 2023-03-24 5257 1 49 81 http://dx.doi.org/10.11646/zootaxa.5257.1.6 journal article 10.11646/zootaxa.5257.1.6 f96f439c-8ba0-4645-ac22-ce46b40aabae 1175-5326 7765939 E18CE51E-CCD2-4E12-B480-930C79D8B745 Epanerchodus wuxi sp. nov. Figs 32–34 Type materials. Holotype Male : China , Chongqing , Wuxi County , Yintiaoling National Nature Reserve , Hongqi , Longtan Cave , 31°30’40.73” N , 109°49’40.93” E , alt. 1677 m , 14 August 2022 , X.K. Jiang & H.M. Chen leg. Paratypes : 12 females , same data as holotype ; 1 male , a manual tunnel near the Longtandong Cave , 31°31’16.83” N , 109°49’51.84” E , alt. 1458 m , same time and collectors as holotype ; 1 female , same cave as holotype , 11 August 2022 , Q.D. Zhu leg. Etymology. The specific name is a noun in apposition, derived from the type locality, Wuxi County. Diagnosis. The new species is similar to Epanerchodus latus Liu & Golovatch, 2018 in having the gonopodal femorite with a finger-shaped process distally and a process medially, the endomere carrying a subapical lobe, but distinguished by the broad subapical endomere with a spiny process and a row of apical denticles ( Fig. 34 ). Description: Length of holotype 22 mm , male paratypes 22 mm , female paratypes 20–37 mm ; width of midbody pro- and metazona in holotype 1.6 mm and 3.1 mm , respectively, another male paratype 1.5 mm and 3.0 mm, in female paratypes up to 1.2–1.9 mm and 2.4–3.5 mm . Live specimens whitish to light yellow and semitransparent ( Fig. 32A ), in alcohol light yellow to light brown ( Figs 32B, C , 33 ). Adults with 20 segments. Width of holotype : head (1.8) << collum (2.7) <segment 2 (2.8) = 3 = 4 = 5 <6 (2.9)– 8 <9 (3.1) –16, thereafter segments 17 (2.9)–19 (1.7). Body gradually tapering posteriorly towards telson ( Figs 32 , 33 ). Head covered with sparse pubescence throughout, vertigial sulcus apparent ( Figs 32A, B ; 33A, C ). Antennae long and slender, clavate, in situ reaching behind segment 4. Collum fan-shaped, with irregular sparse setae, and a faint lateral incision/denticle on each side ( Figs 32A, B ; 33C ). Paraterga distinct and broad ( Figs 32 , 33 ), midbody metaterga about 1.9 times as wide as prozonae. All paraterga slightly upturned dorsally above a faintly convex dorsum ( Fig. 32 ). Anterior edge of metaterga forming a shoulder ( Figs 32 , 33 ). Caudolateral corners of paraterga from rings 2 protruded toward back-inner past tergal margin, subsequent ones acuminate, especially on rings 18–19 ( Figs 32 , 33 ). Integument shining, translucent, prozonae very delicately alveolate ( Figs 32 , 33C ). Three or four notches at lateral margins of paraterga ( Figs 32 , 33 ). Constriction between pro- and metazonae narrow, shallow and smooth ( Fig. 32 ). Metatergal sculpture faint, with three irregular transverse rows of setigerous polygonal bosses ( Fig. 32 ). Sulcus between front and middle rows of setae a little deeper than that between middle and caudal rows ( Fig. 32 ). Tergal setae very short, sparse. Pore formula normal: 5, 7, 9, 10, 12, 13, 15–19. Ozopores large and evident, located between last and penultimate marginal incisions. Epiproct short, conical, slightly surpassing paraprocts caudally, pre-apical lateral papillae small, with two long setae ( Fig. 32C ). Hypoproct lunate, with two setigerous conical papillae at caudal margin ( Fig. 33B, C ). Sterna sparsely setose, cross-shaped impressions shallow ( Fig. 33A, B ). Legs long and slender, about 2.0 times as long as body ring height. Coxa of gonopod ( Fig. 34 ) large and squarish, as usual. Prefemur densely setose and nearly half the length of telopodite. Femorite with a clivus ( cl ), a process ( p2 ) medially and a finger-shaped process ( p1 ) distally. Endomere ( en ) strongly curved, broad subapical, with a small subapical curved lobe ( l ), a row of apical denticles ( d ) and a spiny protuberance medially ( sp ). Seminal groove starting mesally, distally recurved laterad near base of p1 , then run into an accessory seminal chamber, the latter opening on a hairy pulvillus, which makes a clear-cut distolateral loop. Exomere absent. Distribution. Known only from the type locality, Wuxi, Chongqing , China .