Otacilia subdentigera, 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 : 62-66

Otacilia subdentigera sp. nov. (ñṁdzŴṚff)

Figs 49–51

Type material. Holotype ♁, CHINA: Sichuan Province: Mianyang City, Pingwu County, Baima Tibetan Town (32°42′47.92″N, 104°22′35.71″E, 1778 m a.s.l.), 15 Oct. 2020, leg. Luyu Wang.

Paratypes: 2 ♀, with same data as holotype .

Etymology. This specific is named for its similarity to O. dentigera Mu & Zhang, 2021 .

Diagnosis. This new species resembles O. dentigera in having a similarly shaped embolus, but it can be recognized by: 1) the semicircular prolateral tibial apophysis (vs triangular, cf. Fig. 50A and fig. 5A in Mu & Zhang [2021]), 2) the retrolateral tibial apophysis narrowing abruptly near the middle, with a digitiform tip (vs tapering from base to tip, cf. Fig. 50B and fig. 5F in Mu & Zhang [2021]), 3) the oval spermathecae (vs clavate, cf. Fig. 50F and fig. 5I in Mu & Zhang [2021]), and 4) the absence of glandular appendages (vs clavate, cf. Fig. 50F and fig. 5I in Mu & Zhang [2021]).

Description. Male (Holotype): total length 2.69, carapace 1.28 long, 1.12 wide; abdomen 1.41 long, 0.94 wide. Eye sizes and interdistances: AME 0.07, ALE 0.08, PME 0.08, PLE 0.09; AME–AME 0.03, AME–ALE 0.01, ALE–ALE 0.18, PME–PME 0.11, PME–PLE 0.04, PLE–PLE 0.34, ALE–PLE 0.07. EAW 0.45, CRW 0.61, EAW/CRW 0.74, CRW/CW 0.54. MOA 0.22 long, anterior width 0.18, posterior width 0.26. CH 0.12, CH /AME 1.71. Labium 0.14 long, 0.20 wide. Sternum 0.72 long, 0.67 wide. Leg measurements: Ⅰ 4.42 (1.21, 0.45, 1.22, 1.06, 0.48), II 3.81 (1.04, 0.41, 0.93, 0.88, 0.55), III 3.31 (0.91, 0.37, 0.67, 0.86, 0.50), IV 4.71 (1.25, 0.44, 1.07, 1.30, 0.65). Spination: femora I d 1 pl 4, femur II d 1 pl 1, femur IV d 1, tibia Ⅰ pv 6 rv 6, tibia II pv 6 rv 4, metatarsus Ⅰ pv 4 rv 4, metatarsus II pv 4 rv 3.

Coloration. Carapace yellow, radial striae indistinct, with black stripes surrounding submargin of carapace. Abdomen gray, with dorsal scutum, with black line beside dorsal scutum anteriorly and four black transverse stripes at posterior of abdomen ( Fig. 49A, B ). Legs yellow, with black annuli near tip of femora, patellae and tibiae I–IV.

Palp as in Figs 50A–D , 51A–C . Femoral apophysis well developed, nearly at tip of femur. Prolateral tibial apophysis distinct, semicircular. Retrolateral tibial apophysis base wide, narrowing abruptly near middle, tip digitiform, with short branch prolaterally at base. Tegulum wider than cymbium, pyriform; tegular apophysis small. Sperm duct distinct, tapering from retrolateral side of tegulum to embolus. Embolus needle-like, curved, transverse, extending to retrolateral margin of cymbium. Conductor absent.

Female (Paratype): total length 2.95, carapace 1.31 long, 1.15 wide; abdomen 1.64 long, 1.16 wide. Eye sizes and interdistances: AME 0.07, ALE 0.08, PME 0.07, PLE 0.09; AME–AME 0.02, AME–ALE 0.01, ALE–ALE 0.19, PME–PME 0.10, PME–PLE 0.04, PLE–PLE 0.34, ALE–PLE 0. 07. EAW 0.46, CRW 0.64, EAW/CRW 0.72, CRW/CW 0.56. MOA 0.22 long, anterior width 0.17, posterior width 0.25. CH 0.10, CH /AME 1.43. Labium 0.14 long, 0.21 wide. Sternum 0.81 long, 0.76 wide. Leg measurements: Ⅰ 4.45 (1.15, 0.47, 1.26, 1.05, 0.52), II 3.69 (1.00, 0.42, 0.92, 0.86, 0.49), III 3.27 (0.90, 0.38, 0.65, 0.81, 0.53), IV 4.71 (1.29, 0.41, 1.09, 1.25, 0.67). Spination: femur I d 0 pl 3, femur II d 1 pl 1, femora III–IV d 1, tibia Ⅰ pv 6 rv 6, tibia II pv 6 rv 5, metatarsus Ⅰ pv 4 rv 4, metatarsus II pv 4 rv 3. Other characters as in male, except dorsal scutum absent ( Fig. 49C, D ).

Epigyne as in Figs 50E–F , 51D–E . Epigynal plate sclerotized. Median septum absent. Copulatory openings located near centre of plate, close to each other. Copulatory ducts short, curved upwards and connecting with bursa. Connecting tubes long, thinner than copulatory ducts, curved, circular. Bursa oval, transparent. Spermathecae oval, close to each other. Fertilization ducts located at anterior margin of spermathecae.

Distribution. China (Sichuan Province).

Figures

FIGURE 49. Habitus of Otacilia subdentigera sp. nov.: A. Male holotype, dorsal view; B. Same, ventral view; C. Female paratype, dorsal view; D. Same, ventral view.

FIGURE 50. Copulatory organs of Otacilia subdentigera 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; FA—femoral apophysis; PTA—prolateral tibial apophysis; RTA—retrolateral tibial apophysis; SD—sperm duct; TA—tegular apophysis; B—bursa; CO—copulatory opening; CD—copulatory duct; CT—connecting tube; FD—fertilization duct; S—spermathecae.

FIGURE 51. Copulatory organs of Otacilia subdentigera 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.