Otacilia subforcipata, 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 : 55-59

Otacilia subforcipata sp. nov. (ñfflừŴṚff)

Figs 43–45

Type material. Holotype ♁, CHINA: Yunnan Province: Baoshan City, Longyang District, Lujiang Town (24.928230°N, 98.836184°E, 1001 m a.s.l.), 27 Nov. 2017, leg. Yannan Mu.

Paratypes: 5 ♁ 3 ♀, with same data as holotype. 5 ♁ 10 ♀, same locality, Baihua Ridge Old Street (25.298096°N, 98.786316°E, 1983 m a.s.l.), 24 Nov. 2017, leg. Yannan Mu ; 1 ♁ 1 ♀, same locality, Dayang Zhai (24.928124°N, 98.797474°E, 1927 m a.s.l.), 23 Nov. 2017, leg. Yannan Mu.

Etymology. This specific is named for its similarity to O. forcipata Yang, Wang & Yang, 2013 .

Diagnosis. This new species resembles O. forcipata in having a similarly shaped embolus and connecting tubes, but can be recognized by: 1) the absence of a conductor (vs with conductor, cf. Fig. 44B, C and fig. 9 in Yang et al. [2013]), 2) the presence of a mastoid-shaped apophysis on the retroventral side of the tibia (vs without, cf. Fig. 44C and fig. 10 in Yang et al. [2013]), 3) the blunt tip of the retrolateral tibial apophysis, with a slender branch at the base prolaterally (vs tip bifurcate, without a branch, cf. Fig. 44B and fig. 10 in Yang et al. [2013]), and 4) the wider, wavy-shaped posterior edge of the epigynal plate (vs narrow, M-shaped, cf. Fig. 44E and fig. 13 in Yang et al. [2013]).

Description. Male (Holotype): total length 3.46, carapace 1.74 long, 1.52 wide; abdomen 1.72 long, 1.14 wide. Eye sizes and interdistances: AME 0.13, ALE 0.11, PME 0.11, PLE 0.10; AME–AME 0.06, AME–ALE 0.01, ALE–ALE 0.31, PME–PME 0.14, PME–PLE 0.08, PLE–PLE 0.52, ALE–PLE 0.09. EAW 0.65, CRW 0.83, EAW/CRW 0.78, CRW/CW 0.55. MOA 0.28 long, anterior width 0.28, posterior width 0.36. CH 0.17, CH /AME 1.31. Labium 0.17 long, 0.26 wide. Sternum 0.97 long, 0.93 wide. Leg measurements: Ⅰ 7.18 (1.82, 0.63, 2.10, 1.73, 0.90), II 6.12 (1.63, 0.60, 1.64, 1.35, 0.90), III 5.32 (1.41, 0.57, 1.14, 1.35, 0.85), IV 7.95 (2.09, 0.62, 1.88, 2.20, 1.16). Spination: femur I d 2 pl 4, femora II–IV d 1, femur II pl 3, tibia Ⅰ pv 8 rv 8, tibia II pv 7 rv 6, metatarsus Ⅰ pv 4 rv 4, metatarsus II pv 4 rv 3.

Coloration. Carapace black, with several shapes resembling flowing water droplets beside fovea. Abdomen gray, with a narrow and wedge shape dorsal scutum, large black pattern beside dorsal scutum, four black transverse stripes at posterior of abdomen ( Fig. 43A, B ). Legs yellow, with black annuli near tip of femora I–IV.

Palp as in Figs 44A–D , 45A–C . Femoral apophysis well developed, nearly at middle of femur. Tibia about half length of femur. Prolateral tibial apophysis distinct, nearly round. Retrolateral tibial apophysis base wide, tapering from base to end, tip blunt, with slender branch at base prolaterally, curved in dorsal view. Retro-ventral tibia with mastoid-shaped apophysis. Tegulum pyriform, about 1/3 anterior area membranous; tegular apophysis absent. Sperm duct distinct, “U”-shaped, tapering from retrolateral side of tegulum to embolus. Embolus flat and wide, tip blunt, curved, C-shaped. Conductor membranous.

Female (Paratype): total length 3.14, carapace 1.56 long, 1.41 wide; abdomen 1.58 long, 1.09 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 0.29, PME–PME 0.11, PME–PLE 0.07, PLE–PLE 0.43, ALE–PLE 0. 10. EAW 0.57, CRW 0.77, EAW/CRW 0.74, CRW/CW 0.55. MOA 0.27 long, anterior width 0.25, posterior width 0.30. CH 0.12, CH /AME 1.20. Labium 0.14 long, 0.26 wide. Sternum 0.91 long, 0.94 wide. Leg measurements: Ⅰ 6.73 (1.64, 0.64, 2.02, 1.62, 0.81), II 4.64 (1.23, 0.42, 1.18, 1.13, 0.68), III 4.72 (1.27, 0.54, 1.00, 1.23, 0.68), IV 7.22 (1.87, 0.62, 1.73, 2.04, 0.96). Spination: femora I–IV d 1, femur I pl 5, femur II pl 3, tibia Ⅰ pv 9 rv 9, tibia II pv 6 rv 5, metatarsus Ⅰ pv 5 rv 4, metatarsus II pv 4 rv 3. Legs yellow. Other characters as in male, except carapace darker and dorsal scutum absent ( Fig. 43C, D ).

Epigyne as in Figs 44E–F , 45D–E . Epigynal plate sclerotized. Atrium heart-shaped. Median septum distinct, wide anteriorly, narrow posteriorly. Copulatory openings nearly triangular, located at anterior of atrium, separated by more than 3 times spermathecae diameter. Copulatory ducts short. Connecting tubes long, auriform. Bursa balloon-shaped, transparent. Spermathecae small, round, separated by about one diameter. Fertilization ducts located at anterior margin of spermathecae.

Distribution. China (Yunnan Province).

Figures

FIGURE 43. Habitus of Otacilia subforcipata sp. nov.: A. Male holotype, dorsal view; B. Same, ventral view; C. Female paratype, dorsal view; D. Same, ventral view.

FIGURE 44. Copulatory organs of Otacilia subforcipata 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; C— conductor; FA—femoral apophysis; PTA—prolateral tibial apophysis; RTA—retrolateral tibial apophysis; RvTA—retroventral tibial apophysis; SD—sperm duct; B—bursa; CO—copulatory opening; CD—copulatory duct; CT—connecting tube; FD— fertilization duct; GA—glandular appendage; MS—median septum; S—spermathecae.

FIGURE 45. Copulatory organs of Otacilia subforcipata 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.