Otacilia distorta sp. nov. (ƔDZff⁂ặ)

Figs 10–12, 13

Type material. Holotype ♂ (MHBU), CHINA: Chongqing Municipality: Wanzhou District, Wang Erbao Nature Reserve (30°39’38.71”N, 108°43’36.86”E, 1180 m a.s.l.), 25.10.2020, leg. L. Wang.

Etymology. This specific name is derived from the Latin word “ distortus ”, referring to the retrolateral tibial apophysis with distorted base; adjective.

Diagnosis. This new species resembles O. shunhuangshana Mu, Jin & Zhang, 2022 in having similarly shaped bulb, embolus and conductor, but can be recognized by: 1) retrolateral tibial apophysis long, base distorted, curved down and tapering abruptly at middle parts, tip transverse (vs short and dagger-shaped RTA, cf. Fig. 11B–C and fig. 13B–C in Mu et al. [2022]), 2) dorsal tibial apophysis flexed at base (vs nearly straight at base, cf. Fig. 11D and fig. 13D in Mu et al. [2022]), 3) tegular apophysis arc-shaped in ventral view (vs triangular, cf. Fig. 11C and fig. 13C in Mu et al. [2022]).

Description. Male (Holotype): total length 2.69, carapace 1.30 long, 1.06 wide; abdomen 1.25 long, 0.95 wide. Eye sizes and interdistances:AME 0.06, ALE 0.07, PME 0.04, PLE 0.09; AME–AME 0.03, AME–ALE 0.02, ALE– ALE 0.16, PME–PME 0.06, PME–PLE 0.07, PLE–PLE 0.28, ALE–PLE 0.05. EAW 0.40, CRW 0.65, EAW/CRW 0.62, CRW/CW 0.61. MOA 0.18 long, anterior width 0.15, posterior width 0.16. CH 0.10, CH /AME 1.67. Labium 0.16 long, 0.20 wide. Sternum 0.77 long, 0.72 wide. Leg measurements: Ⅰ 3.86 (1.01, 0.46, 1.06, 0.85, 0.48), II 3.47 (0.92, 0.42, 0.92, 0.74, 0.47), III 3.18 (0.68, 0.35, 0.70, 0.91, 0.54), IV 4.18 (0.98, 0.37, 1.06, 1.05, 0.72). Spination: femora I–IV d 1, I pl 3, II pl 2, tibiae Ⅰ pv 6 rv 6, II pv 6 rv 5, metatarsi Ⅰ pv 4 rv 3, II pv 4 rv 3.

Coloration. Carapace yellowish brown, markings with irregularly corrugated edge. Chelicerae, endites, and labium yellow-brown. Sternum slightly longer than wide, shield-shaped. Legs yellow, with black markings near tip of femora and tibiae. Abdomen gray, with two triangular black spots beside dorsal scutum, and four light transverse stripes posteriorly (Fig. 10A–B).

Palp as in Figs 11A–D, 12A–D. Femoral apophysis strongly raised. Patella strong, as long as tibia, with a apophysis anterior. Ventral tibia swollen; prolateral tibial apophysis distinct; retrolateral tibial apophysis long, with distorted base, tapering abruptly from middle to tip, terminal part bent at almost right angle and directed dorsally; dorsal tibial apophysis long, base S-shaped, tip slightly curved. Tegulum wider than cymbium, tegular apophysis small, arc-shaped. Sperm duct distinct, U-shaped. Embolus thin, transverse, with wide base and pointed tip (Figs 11B–C, 12B–C). Conductor thin, flake-like, extending along with embolus.

Female. Unknown.

Distribution. China (Chongqing Municipality).