Chinattus huanggangshan K. K. Liu 2025, sp. nov.

Chinattus huanggangshan K. K. Liu sp. nov. Materials Type status: Holotype. Occurrence: catalogNumber: Sal- 417; recordedBy: Liu Ke-ke; individualCount: 1; sex: male; lifeStage: adult; occurrenceID: C001EB4D-3E81-568A-9DAF-37264D705A36; Taxon: scientificName: Chinattus huanggangshan sp. nov.; Location: country: China; stateProvince: Jiangxi; locality: Shangrao City, Yanshan County, Wuyi Mountain National Park, Tongmuguan Station; verbatimElevation: 1153 m; verbatimCoordinates: 27°49'04.71"N, 117°42'53.27"E; georeferenceProtocol: GPS; Event: samplingProtocol: beating; eventDate: 7 /9/2023 Type status: Paratype. Occurrence: catalogNumber: Sal- 417; recordedBy: Liu Ke-ke; individualCount: 1; sex: female; lifeStage: adult; occurrenceID: 6A1C0CF3-F96C-5AA5-97FE-4E164B987E0B; Taxon: scientificName: Chinattus huanggangshan sp. nov.; Location: country: China; stateProvince: Jiangxi; locality: Shangrao City, Yanshan County, Wuyi Mountain National Park, Tongmuguan Station; verbatimElevation: 1153 m; verbatimCoordinates: 27°49'04.71"N, 117°42'53.27"E; georeferenceProtocol: GPS; Event: samplingProtocol: beating; eventDate: 7/9/2023 Description Male (holotype, Sal- 417). Habitus (Fig. 1 A, B). Total length 3.82. Carapace 2.09 long. Eye sizes and interdistances: AME 0.42, ALE 0.26, PME 0.09, PLE 0.20, AME-AME 0.18, AME-ALE 0.08, PME-PME 1.23, PME-PLE 0.16, AME-PME 0.52, AME-PLE 0.76, ALE-ALE 0.94, PLE-PLE 1.09, ALE-PLE 0.57. MOA length 0.84, anterior width 0.91, posterior width 1.33. Chelicerae (Fig. 1 B) with two promarginal teeth and one retromarginal teeth. Sternum (Fig. 1 B) shield-shaped, longer than wide, anterior margin nearly straight. Leg measurements: I 3.60 (1.10, 0.74, 0.79, 0.57, 0.40); II 2.83 (0.94, 0.57, 0.54, 0.49, 0.29); III 3.60 (1.25, 0.58, 0.66, 0.76, 0.35); IV 3.52 (1.08, 0.54, 0.71, 0.82, 0.37). Leg spination: I ti pv 1-0 - 2, rv 1-0 - 2; met pv 1-0 - 1, rv 1-0 - 1; II ti pv 1-1 - 1, rv 1-1 - 1; met pv 1-0 - 1, rv 1-0 - 1; III ti pr 1-1 - 0, rt 1-1 - 0, pv 1-0 - 1, rv 1-0 - 1; met pr 1-0 - 1, rt 1-0 - 1, pv 1-0 - 1, rv 1-0 - 1; IV ti pr 1-0 - 0, rt 1-0 - 0, pv 1-0 - 0, rv 1-0 - 0; met pr 0-1 - 1, rt 0-1 - 1, pv 1-0 - 1, rv 1-0 - 1. Pedicel 0.14. Abdomen 1.63 long, 1.24 wide. Colouration (Fig. 1 A, B). Carapace reddish-brown to dark brown dorsally, densely covered with white fine setae throughout; median pars cephalica bearing scale-like setae with greenish iridescence; eye bases encircled by black pigment; posterior median eyes medially positioned; fovea distinct, linear in form. Chelicerae reddish-brown. Endites yellowish-brown, length subequal to width, inner margins fringed with dense fine setae. Labium V-shaped. Sternum yellowish-brown, scutiform, anterior margin straight, densely speckled with yellow spots. Legs yellowish-brown to reddish-brown; leg I robust, dark brown. Abdomen dorsally displaying two pairs of distinct yellow muscle marks, lateral areas densely spotted with yellow markings, posterior portion with several white striations; venter showing corrugated striations and yellow linear markings laterally. Palp (Fig. 2 A – E). Retrolateral tibial apophysis (RTA) thick and long, about 1 / 2 of tibia length, with a slightly curved tip in ventral view, stout in retrolateral view, hook-like in dorsal view. Cymbium about 1.5 times as long as wide. Bulb large and slightly swollen, nearly as long as cymbium, with broad posterior lobe (PL) extending postero-prolaterally. Sperm duct (SD) thick with right-angled bend proximal to the embolus base. Embolus (Em) strongly sclerotised, broad, with a broad tip and short retrolateral spine-like apophysis. Embolic base (EB) thick, originating at the medial part and terminating at the 2 o'clock position of the tegulum. Embolic tip (ET) bifurcated, Y-shaped. Female (paratype, Sal- 417). Habitus as in Fig. 1 C, D. Total length 4.85. Carapace 2.26 long, 1.76 wide. Eye sizes and interdistances: AME 0.31, ALE 0.21, PME 0.08, PLE 0.13, AME-AME 0.16, AME-ALE 0.12, PME-PME 1.07, PME-PLE 0.21, AME-PME 0.46, AME-PLE 0.72, ALE-ALE 0.94, PLE-PLE 1.02, ALE-PLE 0.54. MOA: 0.71 long; 0.78 anterior width, 1.17 posterior width. Chelicerae (Fig. 1 D) with two promarginal teeth and one retromarginal teeth. Sternum (Fig. 1 D) oval, longer than wide, anterior margin arcuate. Leg measurements: I 2.80 (0.86, 0.57, 0.57, 0.47, 0.33); II 2.48 (0.80, 0.52, 0.48, 0.41, 0.27); III 2.74 (0.90, 0.47, 0.52, 0.61, 0.24); IV 3.19 (1.01, 0.54, 0.62, 0.72, 0.30). Leg spination: I ti pv 1-1 - 1, rv 1-1 - 1; met pr 1-0 - 1, rt 1-0 - 1, pv 1-0 - 1, rv 1-0 - 1; II ti pv 1-1 - 1, rv 1-1 - 1; met pr 1-0 - 1, rt 1-0 - 1; III ti pr 0-1 - 1, rt 0-1 - 1, pv 1-0 - 0; met pr 1-0 - 1, rt 1-0 - 1; IV ti pv 0-1 - 1; met pr 1-0 - 1, rt 1-0 - 1, pv 0-0 - 1, rv 0-0 - 1. Pedicel 0.06. Abdomen 2.5 long, 1.91 wide. Colouration (Fig. 1 C, D). Abdomen white centrally, other characteristics similar to male. Epigyne (Fig. 2 F, G). Epigynal plate ovoid. Basal plate (BP) with a median mastoid-like depression. Copulatory openings (CO) located laterally on epigynal plate. Copulatory ducts (CD) transversely extending, M-shaped, bearing the papillary glandular appendage (GA) dorsally. Spermathecae (Spe) pear-shaped, inner margin closely touching. Fertilisation ducts (FD) nearly twice as long as spermathecae, directed anterolaterally. Diagnosis The male is similar to that of Chinattus wengnanensis Cao & Li, 2016 (see Cao et al. (2016): 62, figs. 13 A – D, 14 C and E) in the strongly sclerotised and broad embolus with the bifurcated embolic tip, but can be distinguished from it by the diamond-shaped bulbus in ventral view (vs. triangular) (Fig. 2 A – E), the tubular embolus with the Y-shaped apex (vs. beak-shaped) and the retrolateral tibial apophysis with robust base and blunt apex, gradually narrowing while curving inwards towards the cymbium (vs. digitiform, short and sharply pointed). The female resembles C. tibialis (Żabka, 1985) (see Peng (2020): 69, figs. 30 e – f) in the oval epigynal plate with the basal apophysis, but differs by the M-shaped transverse copulatory ducts (vs. simply transversely extending) (Fig. 2 F, G), the basal plate with an arcuate depression (vs. absent) and the short papillary glandular appendages (vs. elongated and bar-shaped). Etymology The specific name refers to the type locality that is the mountain peak (Huanggangshan) of the Wuyi Mountains; noun in apposition. Distribution Known only from the type locality in Jiangxi Province, China (Fig. 3). Ecology It was collected in broad-leaved forests.