Otacilia maliu, 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 : 41-45

Otacilia maliu sp. nov. (麻DŴṚff)

Figs 31–33

Type material. Holotype ♁, CHINA: Sichuan Province: Chengdu City, Chongzhou County, Wenjingjiang Town , Anzihe Conservation Area , Maliugou (30°46.790′N, 103°13.530′E, 1692 m a.s.l.), 3 Oct. 2016, leg. Luyu Wang.

Paratypes: 17 ♁ 19 ♀, 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 ( Wang, Zhang & Zhang, 2012) in having a similar embolus and dorsal tibial apophysis, but can be recognized by: 1) the slightly protruding femoral apophysis (vs strongly protruded, cf. Fig. 32A and fig. 9E in Wang et al. [2012]), 2) the wider retrolateral tibial apophysis, with the tip of the prolateral edge folding inwards (vs thin and not folding, cf. Fig. 32B–D and fig. 9F in Wang et al. [2012]), 3) the closely situated spermathecae (vs distinctly separated, cf. Fig. 32F and fig. 9I in Wang et al. [2012]), and 4) the smaller, round copulatory openings (vs large and arch-shaped, cf. Fig. 32E and fig. 9H in Wang et al. [2012]).

Description. Male (Holotype): total length 2.52, carapace 1.23 long, 1.08 wide; abdomen 1.29 long, 0.91 wide. Eye sizes and interdistances:AME 0.06, ALE 0.09, PME 0.05, PLE 0.08; AME–AME 0.03, AME–ALE 0.01, ALE– ALE 0.16, PME–PME 0.06, PME–PLE 0.07, PLE–PLE 0.30, ALE–PLE 0.04. EAW 0.40, CRW 0.65, EAW/CRW 0.62, CRW/CW 0.53. MOA 0.18 long, anterior width 0.15, posterior width 0.17. CH 0.12, CH /AME 2.00. Labium 0.14 long, 0.18 wide. Sternum 0.77 long, 0.69 wide. Leg measurements: Ⅰ 4.16 (1.17, 0.44, 1.12, 0.97, 0.46), II 3.62 (1.04, 0.43, 0.85, 0.87, 0.43), III 3.36 (0.91, 0.38, 0.65, 0.85, 0.57), IV 4.75 (1.22, 0.47, 1.04, 1.26, 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 yellow, radial striae distinct beside fovea. Abdomen off-white, with a small and narrow dorsal scutum, a pair of black triangular pattern and four chevron stripes posteriorly ( Fig. 31A, B ). Legs yellow.

Palp as in Figs 32A–D , 33A–C . Femoral apophysis protruding, round, located near middle of femur. Tibia short, about half length of femur. Retrolateral tibial apophysis wide, prolateral margin of tip folding inward; dorsal tibial apophysis slender, curved towards prolateral side of cymbium in dorsal view. Tegulum wider than cymbium, posterior edge straight; tegular apophysis small, triangular, located at retrolateral tip of tegulum. Sperm duct wide and distinct, occupying more than half length of tegulum, tapering from retrolateral side of tegulum to embolus. Embolus short, base triangular, tip transverse and extending towards retrolateral side of cymbium. Conductor subtriangular, transparent.

Female (Paratype): total length 2.66, carapace 1.25 long, 1.09 wide; abdomen 1.41 long, 0.96 wide. Eye sizes and interdistances: AME 0.06, ALE 0.09, PME 0.05, PLE 0.08; AME–AME 0.03, AME–ALE 0.01, ALE–ALE 0.16, PME–PME 0.06, PME–PLE 0.05, PLE–PLE 0.29, ALE–PLE 0.05. EAW 0.39, CRW 0.61, EAW/CRW 0.64, CRW/CW 0.56. MOA 0.18 long, anterior width 0.15, posterior width 0.18. CH 0.09, CH /AME 1.50. Labium 0.16 long, 0.20 wide. Sternum 0.83 long, 0.75 wide. Leg measurements: Ⅰ 4.21 (1.15, 0.46, 1.15, 0.94, 0.51), II 3.50 (1.02, 0.47, 0.84, 0.79, 0.38), III 3.35 (0.87, 0.43, 0.64, 0.84, 0.57), IV 4.71 (1.22, 0.46, 1.02, 1.27, 0.74). 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 darker than male, radial striae indistinct, abdomen offwhite, without dorsal scutum, anterior half covered by fluff, several chevron stripes at posterior ( Fig. 31C, D ).

Epigyne as in Figs 32E–F , 33D–E . Epigynal plate weakly sclerotized. Median septum narrow. Copulatory openings small and round, located near middle of plate. Copulatory ducts thick and curved, connecting with bursa. Connecting tubes short, narrower than copulatory ducts. Glandular appendages absent. Bursa large, transparent. Spermathecae globular, close to each other. Fertilization ducts located at anterior margin of spermathecae.

Distribution. China (Sichuan Province).

Figures

FIGURE 31. Habitus of Otacilia maliu sp. nov.: A. Male holotype, dorsal view; B. Same, ventral view; C. Female paratype, dorsal view; D. Same, ventral view.

FIGURE 32. Copulatory organs of Otacilia maliu 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; 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 33. Copulatory organs of Otacilia maliu 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.