Otacilia impleta, 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 : 38-41

Otacilia impleta sp. nov. (ffiŴṚff)

Figs 28–30

Type material. Holotype ♁, CHINA: Yunnan Province: Dali Bai Autonomous Prefecture, Nanjian Yi Autonomous County, Fenghuang Mountain (24°53′33.35″N, 100°19′42.67″E, 2294 m a.s.l.), 26 Jul. 2021, leg. Yannan Mu.

Paratypes: 6 ♀, with same data as holotype .

Etymology. The specific name is derived from the Latin word “ impletus ”, referring to the satisfaction derived from naming this species; adjective.

Diagnosis. This new species resembles O.celata in having round copulatory openings and globular spermathecae, but can be recognized by: 1) the curved, arc-shaped retrolateral tibial apophysis (vs not curved, cf. Fig. 29C and fig. 2B in Fu et al. 2016), 2) the longer, upwards-extending embolus curved towards the retrolateral side of the cymbium (vs short, not curved, cf. Fig. 29C and fig. 2B in Fu et al. 2016), 3) the smaller, ridge-shaped tegular apophysis (vs large, triangular, cf. Fig. 29C and fig. 1D in Fu et al. 2016), 4) thinner, longer connecting tubes (vs thick and short, cf. Fig. 29F and fig. 1G in Fu et al. 2016).

Description. Male (Holotype): total length 2.40, carapace 1.13 long, 1.11 wide; abdomen 1.27 long, 0.84 wide. Eye sizes and interdistances:AME 0.06, ALE 0.08, PME 0.05, PLE 0.08; AME–AME 0.03, AME–ALE 0.01, ALE– ALE 0.16, PME–PME 0.05, PME–PLE 0.05, PLE–PLE 0.24, ALE–PLE 0.05. EAW 0.38, CRW 0.55, EAW/CRW 0.69, CRW/CW 0.50. MOA 0.19 long, anterior width 0.15, posterior width 0.16. CH 0.11, CH /AME 1.83. Labium 0.06 long, 0.18 wide. Sternum 0.57 long, 0.53 wide. Leg measurements: Ⅰ 4.24 (1.18, 0.47, 1.08, 0.95, 0.56), II 3.66 (1.02, 0.42, 0.84, 0.80, 0.58), III 3.25 (0.87, 0.40, 0.64, 0.80, 0.54), IV 4.95 (1.31, 0.45, 1.13, 1.30, 0.76). Spination: femora I–IV d 1, femur I pl 3, femur II pl 1, tibia Ⅰ pv 6 rv 6, tibia II pv 6 rv 5, metatarsi Ⅰ–II pv 4 rv 3.

Coloration. Carapace dark brown, with several shapes resembling flowing water droplets beside fovea.Abdomen black, dorsum nearly entirely covered by scutum, with pair of oval yellow markings near middle and two W-shaped stripes posteriorly ( Fig. 28A, B ). Legs yellow, with black annuli near tip of femora and tibiae.

Palp as in Figs 29A–D , 30A–C . Femoral apophysis protruding slightly, round, at middle parts of femur. Retrolateral tibial apophysis strongly curved, arc-shaped in ventral view; dorsal tibial apophysis smaller than retrolateral tibial apophysis, with broad base and thin tip, leaf-shaped in dorsal view. Tegulum slightly wider than cymbium, oval; tegular apophysis small, triangular, located at retrolateral tip of tegulum. Sperm duct distinct, tapering from retrolateral side of tegulum to embolus. Embolus short, base wide, triangular, tip curved towards retrolateral side of cymbium tip. Conductor narrow, transparent.

Female (One paratype): total length 2.68, carapace 1.29 long, 1.12 wide; abdomen 1.39 long, 1.10 wide. Eye sizes and interdistances: AME 0.06, ALE 0.10, PME 0.06, PLE 0.08; AME–AME 0.04, AME–ALE 0.01, ALE– ALE 0.18, PME–PME 0.07, PME–PLE 0.06, PLE–PLE 0.31, ALE–PLE 0.06. EAW 0.42, CRW 0.60, EAW/CRW 0.70, CRW/CW 0.57. MOA 0.420 long, anterior width 0.17, posterior width 0.19. CH 0.10, CH /AME 1.67. Labium 0.14 long, 0.19 wide. Sternum 0.82 long, 0.69 wide. Leg measurements: Ⅰ 4.64 (1.51, 0.47, 1.15, 0.97, 0.54), II 3.67 (1.01, 0.42, 0.88, 0.83, 0.53), III 3.25 (0.86, 0.38, 0.68, 0.80, 0.53), IV 4.82 (1.29, 0.46, 1.09, 1.21, 0.77). Spination: femora I–IV d 1, femur I pl 3, femur II pl 1, tibia Ⅰ pv 6 rv 6, tibia II pv 6 rv 5, metatarsi Ⅰ–II pv 4 rv 3. Carapace color and pattern same as male, abdomen black, without dorsal scutum, covered by fluff, several white spots and stripes faint in dorsal view ( Fig. 28C, D ).

Epigyne as in Figs 29E–F , 30D–E . Epigynal plate weakly sclerotized, posterior edge straight. Median septum absent. Copulatory openings round, located at middle of plate. Copulatory ducts not visible. Glandular appendages short, digitiform. Connecting tubes V-shaped, shorter than fertilization duct. Bursa large, transparent, balloon-shaped. Spermathecae globular, close to each other. Fertilization ducts located at anterior margin of spermathecae.

Distribution. China (Yunnan Province).

Figures

FIGURE 28. Habitus of Otacilia impleta sp. nov.: A. Male holotype, dorsal view; B. Same, ventral view; C. Female paratype, dorsal view; D. Same, ventral view.

FIGURE 29. Copulatory organs of Otacilia impleta 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; DTA—dorsal tibial apophysis; 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; GA—glandular appendage; S—spermathecae.

FIGURE 30. Copulatory organs of Otacilia impleta 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.