Otacilia pugnus, Shi & Mu & Zhang, 2024

Otacilia pugnus sp. nov. (Þff⁂ặ)

Figs 4–6 View FIGURE 4 View FIGURE 5 View FIGURE 6 , 13 View FIGURE 13

Type material. Holotype ♂ ( MHBU), CHINA: Hunan Province: Changde City, Shimen Co., Hupingshan Town , Jiangpinghe Vill., Zhongjiao Mt ( 30°0’14.90”N, 110°28’42.82”E, 362 m a.s.l.), 30.10.2018, leg. Z. Li. GoogleMaps

Paratypes: 2♁ 7♀ ( MHBU), with same data as holotype GoogleMaps .

Etymology. The specific epithet is derived from the Latin word “ pugnus ”, referring to the fist-shaped retrolateral tibial apophysis.

Diagnosis. The new species resembles O. lata Yao, Irfan & Peng, 2019 in having a similarly shaped embolus, tegular apophysis and bursa, but can be recognized by: 1) the retrolateral tibial apophysis short, fist-shaped, with digitiform tip (vs long, rectangular, cf. Fig. 5B View FIGURE 5 and fig. 3G in Yao et al. [2019]), 2) conductor slender (vs wide, cf. Fig. 5B–C View FIGURE 5 and fig. 3F–G in Yao et al. [2019]), 3) copulatory opening round (vs oval, cf. Fig. 5E View FIGURE 5 and fig. 3C in Yao et al. [2019]).

Description. Male ( Holotype): total length 2.69, carapace 1.43 long, 1.23 wide; abdomen 1.26 long, 0.86 wide. Eye sizes and interdistances:AME 0.08, ALE 0.10, PME 0.08, PLE 0.10; AME–AME 0.04, AME–ALE 0.01, ALE– ALE 0.21, PME–PME 0.11, PME–PLE 0.06, PLE–PLE 0.38, ALE–PLE 0.08. EAW 0.50, CRW 0.74, EAW/CRW 0.68, CRW/CW 0.60. MOA 0.25 long, anterior width 0.20, posterior width 0.26. CH 0.14, CH /AME 1.75. Labium 0.15 long, 0.21 wide. Sternum 0.84 long, 0.75 wide. Leg measurements: Ⅰ 5.91 (1.52, 0.57, 1.82, 1.46, 0.54), II 4.72 (1.23, 0.49, 1.24, 1.11, 0.65), III 3.98 (1.07, 0.46, 0.84, 1.04, 0.57), IV 6.31 (1.68, 0.58, 1.46, 1.74, 0.85). Spination: femora I–IV d 1, I pl 4, II pl 2, tibiae Ⅰ pv 7 rv 8, II pv 7 rv 6, metatarsi Ⅰ pv 4 rv 4, II pv 4 rv 3.

Coloration. Carapace yellowish, with broad longitudinal mottled median band, slightly broader than ocular region. Chelicerae with three promarginal and five retromarginal teeth. Sternum longer than wide, shield-shaped. Legs yellow. Abdomen brown, with narrow and wedge-shaped dorsal scutum, three light transverse stripes at posterior of abdomen, venter of abdomen with pattern ( Fig. 4A–B View FIGURE 4 ).

Palp as in Figs 5A–D View FIGURE 5 , 6A–D View FIGURE 6 . Femoral apophysis well-developed, nearly at middle of femur. Tibia swollen, half as long as femur, prolateral tibial apophysis nearly half-round; retrolateral tibial apophysis long, fist-shaped, with digitiform tip. Tegulum pyriform, tegular apophysis clavate, slightly curved at end. Sperm duct distinct, U-shaped. Embolus hooked. Conductor membranous, shorter than tegular apophysis.

Female ( paratype): total length 3.51, carapace 1.61 long, 1.39 wide; abdomen 1.90 long, 1.30 wide. Eye sizes and interdistances: AME 0.10, ALE 0.10, PME 0.08, PLE 0.09; AME–AME 0.04, AME–ALE 0.01, ALE–ALE 0.24, PME–PME 0.11, PME–PLE 0.05, PLE–PLE 0.38, ALE–PLE 0.08. EAW 0.53, CRW 0.78, EAW/CRW 0.68, CRW/CW 0.56. MOA 0.26 long, anterior width 0.23, posterior width 0.28. CH 0.13, CH /AME 1.30. Labium 0.16 long, 0.25 wide. Sternum 0.97 long, 0.84 wide. Leg measurements: Ⅰ 6.33 (1.56, 0.65, 1.97, 1.51, 0.64), II 5.14 (1.34, 0.57, 1.37, 1.20, 0.66), III 4.37 (1.18, 0.52, 0.91, 1.10, 0.66), IV 6.54 (1.74, 0.59, 1.56, 1.76, 0.89). Spination: femora I–IV d 1, I pl 5, II pl 3, tibiae Ⅰ pv 8 rv 9, II pv 8 rv 8, metatarsi Ⅰ pv 4 rv 4, II pv 4 rv 3. Other characters as in male, except darker color and absent of dorsal scutum ( Fig. 4C, D View FIGURE 4 ).

Epigyne as in Figs 5E–F View FIGURE 5 , 6E–F View FIGURE 6 . Median septum distinct, anteriorly wider. Copulatory openings round, separated by more than two times of spermathecae diameters. Copulatory ducts oval, longer than wider. Connecting tubes L-shaped, longer than copulatory ducts. Glandular appendage indistinct. Bursa large, covering more than half of epigynal plate, nearly more egg-shaped. Spermathecae oval, separated by about by one radius. Fertilization ducts located at anterior margin of spermathecae.

Distribution. China ( Hunan Province).