Otacilia allomanubrium, 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 : 27-31

Otacilia allomanubrium sp. nov. (KAEŴṚff)

Figs 19–21

Type material. Holotype ♁, CHINA: Yunnan Province: Hani-Yi Autonomous Prefecture of Honghe, Pingbian Miao Autonomous County, Daweishan National Forest Park (22°54.317′N, 103°41.961′E, 2124 m a.s.l.), 28 Oct. 2016, leg. Yannan Mu.

Paratypes: 4 ♁ 5 ♀, with same data as holotype .

Etymology. This species name is a combination of “ allocot ” and “ manubrium ”, referring to the long pedicel; adjective.

Diagnosis. This new species resembles O. taoyuan ( Fu, Chen & Zhang, 2016) in having a similar femoral apophysis, but can be recognized by: 1) slender embolus (vs short and thick, cf. Fig. 20C and figs 9B, 10B in Fu et al. [2016]), 2) shorter retrolateral tibial apophysis without distinct curvature (vs long and curved tip, cf. Figs 20B, D and figs 9E–F, 10C in Fu et al. [2016]), 3) curved tip of dorsal tibial apophysis (vs not curved, cf. Fig. 20B and figs 9F, 10C in Fu et al. [2016]), 4) digit-shaped glandular appendages (vs absent, cf. Fig. 20F and figs 9H, 10E in Fu et al. [2016]), and (5) closely situated spermathecae (vs separate, cf. Fig. 20F and figs 9H, 10E in Fu et al. [2016]).

Description. Male (Holotype): total length 3.81, carapace 1.82 long, 1.55 wide; abdomen 1.99 long, 1.27 wide. Eye sizes and interdistances: AME 0.12, ALE 0.11, PME 0.10, PLE 0.11; AME–AME 0.04, AME–ALE 0.01, ALE– ALE 0.29, PME–PME 0.12, PME–PLE 0.07, PLE–PLE 0.50, ALE–PLE 0.09. EAW 0.65, CRW 0.84, EAW/CRW 0.77, CRW/CW 0.54. MOA 0.31 long, anterior width 0.27, posterior width 0.35. CH 0.15, CH /AME 1.25. Labium 0.15 long, 0.27 wide. Sternum 1.02 long, 0.94 wide. Leg measurements: Ⅰ 6.59 (1.67, 0.72, 1.83, 1.58, 0.79), II 5.62 (1.55, 0.66, 1.38, 1.25, 0.78), III 4.97 (1.32, 0.61, 1.00, 1.26, 0.78), IV 6.08 (1.95, 0.65, 1.53, 0.98, 0.97). Spination: femur I d 2 pl 4, femur II d 1 pl 2, femora III–IV d 1, tibia Ⅰ pv 6 rv 7, tibia II pv 6 rv 6, metatarsi Ⅰ–II pv 4 rv 3.

Coloration. Carapace blackish-brown, with several shapes resembling flowing water droplets beside fovea. Abdomen gray, with small narrow dorsal scutum, tip with large black spot, posterior with four black stripes ( Fig. 19A, B ). Legs yellow, with black annuli near tips of femora Ⅰ–IV.

Palp as in Figs 20A–D , 21A–C . Femoral apophysis protrude, near at middle part of femur. Tibia short, about half length of femur. Retrolateral tibial apophysis base wide, tip narrow and slightly curved, leaf-shaped in retrolateral view; dorsal tibial apophysis base wide, tip lamellar-shaped and curved in retrolateral view. Tegulum wider than cymbium, posterior edge nearly straight; tegular apophysis small, arc-shaped, located centrally at tip of tegulum. Sperm duct wide and distinct, tapering from retrolateral of tegulum to embolus. Embolus tapering from base to tip, slightly curved, extending towards retrolateral side of cymbium. Conductor absent.

Female (Paratype): total length 4.09, carapace 1.85 long, 1.56 wide; abdomen 2.24 long, 1.57 wide. Eye sizes and interdistances: AME 0.12, ALE 0.12, PME 0.11, PLE 0.11; AME–AME 0.04, AME–ALE 0.01, ALE–ALE 0.29, PME–PME 0.11, PME–PLE 0.06, PLE–PLE 0.47, ALE–PLE 0.08. EAW 0.60, CRW 0.83, EAW/CRW 0.72, CRW/CW 0.53. MOA 0.31 long, anterior width 0.26, posterior width 0.34. CH 0.13, CH /AME 1.08. Labium 0.14 long, 0.29 wide. Sternum 1.08 long, 1.01 wide. Leg measurements: Ⅰ 6.85 (1.75, 0.75, 1.96, 1.62, 0.77), II 5.89 (1.54, 0.69, 1.48, 1.37, 0.81), III 5.01 (1.23, 0.62, 1.07, 1.29, 0.80), IV 5.88 (1.61, 0.46, 1.30, 1.55, 0.96). Spination: femur I d 2 pl 4, femur II d 1 pl 2, femur III d 1, femur IV without spine, tibia Ⅰ pv 7 rv 7, tibia II pv 7 rv 6, metatarsus Ⅰ pv 4 rv 4, metatarsus II pv 4 rv 3. Others characters as for male, except color lighter and dorsal scutum absent ( Fig. 19C, D ).

Epigyne as in Figs 20E–F , 21D–E . Epigynal plate weakly sclerotized. Median septum narrow. Copulatory openings small and round, widely separated. Copulatory ducts short and thick, connected to bursa. Connecting tubes long and narrower than copulatory ducts, strongly curved as in spectacles frame. Glandular appendages slightly long, digit-shaped. Bursa large, transparent, irregular-shaped. Spermathecae clavate, close to each other. Fertilization ducts located anterior margin of spermathecae.

Distribution. China (Yunnan Province).

Figures

FIGURE 19. Habitus of Otacilia allomanubrium sp. nov.: A. Male holotype, dorsal view; B. Same, ventral view; C. Female paratype, dorsal view; D. Same, ventral view.

FIGURE 20. Copulatory organs of Otacilia allomanubrium 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; 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 21. Copulatory organs of Otacilia allomanubrium 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.