Otacilia wenbi, Mu, Yannan & Zhang, Feng, 2023

Mu, Yannan & Zhang, Feng, 2023, Further additions to the guardstone spider fauna from China (Araneae: Phrurolithidae), Zootaxa 5338 (1), pp. 1-104 : 66-69

Otacilia wenbi sp. nov. (ANJŴṚff)

Figs 52–54

Type material. Holotype ♁, CHINA: Yunnan Province: Baoshan City, Tengchong County, Laifengshan National Forest Park , Wenbi Tower (25.014684°N, 98.479428°E, 1914 m a.s.l.), 12 Dec. 2017, leg. Yannan Mu.

Paratypes: 10 ♁ 18 ♀, with same data as holotype .

Etymology. The species name is derived from the type locality; noun in apposition.

Diagnosis. This new species resembles O. hamata in having a similarly slanted embolus, but can be recognized by: 1) the larger, arch-shaped tegular apophysis (vs small and triangular, cf. Fig. 53C and fig. 9G in Wang et al. [2012]), 2) the absence of a conductor (vs with conductor, cf. Fig. 53C and fig. 9G in Wang et al. [2012]), 3) the blunt-tipped retrolateral and shorter dorsal tibial apophyses (vs sharp-tipped retrolateral tibial apophysis tip and long dorsal tibial apophysis, cf. Fig. 53D and fig. 9F in Wang et al. [2012]), 4) the smaller, oval copulatory openings (vs large and arc-shaped, cf. Fig. 53E and fig. 9H in Wang et al. [2012]), and 5) the smaller, closely situated spermathecae (vs separated by about one spermatheca diameter, cf. Fig. 53F and fig. 9I in Wang et al. [2012]).

Description. Male (Holotype): total length 3.50, carapace 1.65 long, 1.44 wide; abdomen 1.85 long, 1.46 wide. Eye sizes and interdistances: AME 0.10, ALE 0.10, PME 0.08, PLE 0.09; AME–AME 0.05, AME–ALE 0.01, ALE–ALE 0.27, PME–PME 0.13, PME–PLE 0.07, PLE–PLE 0.47, ALE–PLE 0.07. EAW 0.59, CRW 0.73, EAW/CRW 0.81, CRW/CW 0.51. MOA 0.27 long, anterior width 0.24, posterior width 0.32. CH 0.17, CH /AME 1.70. Labium 0.15 long, 0.25 wide. Sternum 0.88 long, 0.88 wide. Leg measurements: Ⅰ 5.90 (1.49, 0.59, 1.72, 1.39, 0.71), II 4.94 (1.32, 0.55, 1.29, 1.11, 0.67+), III 4.25 (1.13, 0.47, 0.91, 1.11, 0.63), IV 5.84 (1.66, 0.49, 1.32, 1.51, 0.86). Spination: femur I d 1 pl 5, femur II d 1 pl 2, femur IV d 1, tibia Ⅰ pv 7 rv 7, tibia II pv 7 rv 6, metatarsi Ⅰ–II pv 4 rv 3.

Coloration. Carapace brown, with several markings resembling flowing water droplets beside fovea. Abdomen gray, with long narrow dorsal scutum, tip black, posterior with two black transverse stripes ( Fig. 52A, B ). Legs yellow, with black annuli near tips of femora Ⅰ–IV and tibiae Ⅰ–III.

Palp as in Figs 53A–D , 54A–C . Femoral apophysis protruding, well-developed, near middle of femur. Tibia short, about 1/3 of femur. Retrolateral tibial apophysis short but strong, tip blunt; dorsal tibial apophysis base strong, tip flake-shaped, wider than base in dorsal view, curved in retrolateral view. Bulb large, tegulum wider than cymbium, pyriform; tegular apophysis large, arch-shaped, located at retrolateral tip of tegulum. Sperm duct distinct, tapering from retrolateral side of tegulum to embolus. Embolus tapering from base to tip, transverse, slightly curved and extending towards retrolateral side of cymbium. Conductor absent.

Female (Paratype): total length 4.09, carapace 1.76 long, 1.56 wide; abdomen 2.33 long, 1.56 wide. Eye sizes and interdistances: AME 0.12, ALE 0.12, PME 0.10, PLE 0.11; AME–AME 0.05, AME–ALE 0.01, ALE–ALE 0.28, PME–PME 0.12, PME–PLE 0.07, PLE–PLE 0.47, ALE–PLE 0.09. EAW 0.63, CRW 0.79, EAW/CRW 0.80, CRW/CW 0.51. MOA 0.30 long, anterior width 0.27, posterior width 0.33. CH 0.15, CH /AME 1.25. Labium 0.15 long, 0.28 wide. Sternum 1.00 long, 0.95 wide. Leg measurements: Ⅰ 6.44 (1.69, 0.68, 1.85, 1.52, 0.70), II 5.28 (1.42, 0.61, 1.40, 1.21, 0.64), III 4.54 (1.19, 0.55, 0.97, 1.14, 0.69), IV 6.76 (1.78, 0.60, 1.54, 1.89, 0.95). Spination: femora I–IV d 1, femur I pl 4, femur II pl 3, tibia Ⅰ pv 8 rv 8, tibia II pv 7 rv 7, metatarsus Ⅰ pv 4 rv 4, metatarsus II pv 4 rv 3. Other characters as in male, except color darker and dorsal scutum absent ( Fig. 52C, D ).

Epigyne as in Figs 53E–F , 54D–E . Epigynal plate weakly sclerotized. Median septum trapezoidal. Copulatory openings small and round, separated by about half diameter of spermatheca. Copulatory ducts short, not visible. Connecting tube long and curved. Glandular appendages absent. Bursa large, sclerotized, irregularly-shaped. Spermathecae round, close to each other. Fertilization ducts located at anterior margin of spermathecae.

Distribution. China (Yunnan Province).

Figures

FIGURE 52. Habitus of Otacilia wenbi sp. nov.: A. Male holotype, dorsal view; B. Same, ventral view; C. Female paratype, dorsal view; D. Same, ventral view.

FIGURE 53. Copulatory organs of Otacilia wenbi sp. nov.: A. Male left palp, prolateral view; B. Same, retrolateral view; C. Same, ventral view; D. Same, dorsal view; E. Epigyne, ventral view; F. Same, dorsal view. Abbreviations: E—embolus; DTA— dorsal tibial apophysis; FA—femoral apophysis; RTA—retrolateral tibial apophysis; SD—sperm duct; TA—tegular apophysis; B—bursa; CO—copulatory opening; CT—connecting tube; FD—fertilization duct; MS—median septum; S—spermathecae.

FIGURE 54. Copulatory organs of Otacilia wenbi sp. nov.: A. Male left palp, ventral view; B. Same, retrolateral view; C. Same, dorsal view; D. Epigyne, ventral view; E. Same, dorsal view. Scale bars: 0.2 mm.