Otacilia bizhouica Liu sp. nov. Figures 1, 2, 3, 22

Type material.

Holotype: ♂, China, Jiangxi Province, Ji’an City, Suichuan county, Bizhou Town, Baishuixian Village, Dakeng Group, 26°19'55.98"N, 114°44'08.72"E, 362 m, 4 October 2019, leg. Ke-ke Liu et al. Paratypes: 2 ♀, with the same data as holotype.

Etymology.

The specific name derived from the type locality, Bizhou Town; adjective.

Diagnosis.

The male of the new species is similar to Otacilia liupan Hu & Zhang, 2011 in having a short retrolateral tibial apophysis bending inwards to the base of the cymbium and the sub-circular sperm duct (see Hu and Zhang 2011: 60, figs 2-5), but can be separated from it by the thick retrolateral tegular apophysis (Figs 1D, E, 2A, B) (vs. thin) and a stubby pipe-shaped retrolateral tibial apophysis in dorsal view (Figs 1E, F, 2C) (vs. finger-like). The females resemble those of O. ovoidea Liu, 2020 in having sclerotized epigynal ridges (Fig. 3C, D), but can be separated from it by the rectangular median septum (vs. funnel-shaped) and the U-shaped spermathecae (vs. globular) (see Liu et al. 2020: 22, fig. 14C, D).

Description.

Male (Holotype). Habitus as in Fig. 1A, B. Total length 3.56, carapace 1.56 long, 1.33 wide. Eye sizes and interdistances: AME 0.09, ALE 0.10, PME 0.08, PLE 0.09; ALE-AME 0.01, AME-AME 0.05, PLE-PME 0.06, PME-PME 0.12, ALE-ALE 0.24, PLE-PLE 0.38, ALE-PLE 0.07, AME-PME 0.10, AME-PLE 0.16. MOA 0.25 long, frontal width 0.21, posterior width 0.26. Chelicerae (Fig. 1A, B) with three promarginal (proximal largest, distal smallest) and six retromarginal teeth (distal largest, 5th smallest). Sternum (Fig. 1B), posterior end triangular, relatively blunt. Pedicel 0.2 long. Abdomen (Fig. 1A, B) 1.80 long, 1.06 wide. Leg measurements: I 6.46 (1.75, 0.58, 2.03, 1.53, 0.57); II 5.28 (1.32, 0.56, 1.55, 1.21, 0.64); III 4.39 (1.08, 0.42, 1.09, 1.16, 0.64); IV 7.31 (1.94, 0.61, 1.75, 2.01, 1.00). Leg spination (Fig. 1A, B): femur I with two dorsal spines; femora II-IV with one dorsal spine each; femora I pv1111, II pv111; tibiae I v22222222, II v2222222; metatarsi I v2222, II v222.

Colouration (Fig. 1A, B). Carapace yellow-brown, with radial, irregular dark yellow-brown mottled markings on surface. Chelicerae yellow-brown. Endites yellow, mottled. Sternum yellow, lateral margins with dark mottled markings. Legs yellow. Abdomen yellow-brown, with pair of large triangular yellowish spots on posterior dorsal scutum, three light chevron-shaped stripes on sub-medial part, and yellowish arc-shaped stripe posteriorly; weak dorsal scutum in anterior half; venter with H-shaped and pair of sloping markings posteriorly.

Palp (Figs 1C-F, 2). Femoral apophysis well-developed, as wide as half of femoral length. Patella unmodified. Tibia with large retrolateral apophysis, as long as tibial length, apex blunt, bending inwards to base of cymbium, with a broad base and a basal apophysis, directed dorsally in dorsal view. Cymbium width less than half of its length. Bulb broad oval, with sub-circular sperm duct, apophyses absent. Embolus hook-shaped, thick, with broad triangular base. Retrolateral tegular apophysis straight, thick, submedial part covered by distal tegular apophysis. Distal tegular apophysis oval, arising from base of embolus and retrolateral sperm duct.

Female (paratype). Habitus as in Fig. 3A, B. Lighter than male. Total length 4.04, carapace 1.68 long, 1.45 wide. Eye sizes and interdistances: AME 0.08, ALE 0.09, PME 0.09, PLE 0.08, AME-AME 0.05, AME-ALE 0.02, PME-PME 0.13, PME-PLE 0.06, AME-PME 0.05, AME-PLE 0.17, ALE-ALE 0.23, PLE-PLE 0.37, ALE-PLE 0.1. MOA 0.25 long, frontal width 0.20, posterior width 0.27. Chelicerae (Fig. 3A, B) with three promarginal (proximal largest, distal smallest) and five retromarginal teeth (distal largest, fourth smallest). Pedicel 0.3 long. Abdomen (Fig. 3A) 2.05 long, 1.2 wide. Leg (Fig. 3A, B) measurements: I 6.35 (1.53, 0.48, 2.25, 1.41, 0.68); II 5.83 (1.52, 0.63, 1.68, 1.30, 0.70); III 4.66 (1.21, 0.51, 1.06, 1.18, 0.70); IV 7.32 (1.97, 0.57, 1.72, 2.11, 0.95). Leg spination (Fig. 3A, B): tibiae I v222222222, II v2222222.

Epigyne (Fig. 3C, D). Epigynal plate funnel-shaped, posterior with elongate rectangular median septum. Copulatory ducts, glandular appendages, connecting tubes and spermathecae distinctly visible through integument in intact epigyne. Anterior fovea separated by weakly sclerotized transverse margin, medially with V-shaped sclerotized plug, covering copulatory openings. Copulatory ducts broad, short, posteriorly with pair of kidney-shaped transparent bursae medially. Glandular appendages relatively long, located on anterior of copulatory ducts, extending postero-laterally. Connecting tubes short, broad, as long as copulatory ducts, located between glandular appendages and spermathecae, posteriorly close to each other. Spermathecae U-shaped, anterior part slightly separated, posterior part touching. Fertilization duct short, located sub-medially on spermathecae, directed anterolaterally.

Distribution.

Known only from the type locality in Jiangxi Province, China (Fig. 22).