Otacilia yangmingensis, Jin, Chi, Fu, Lina, Yin, Xiangchu & Zhang, Feng, 2016

Jin, Chi, Fu, Lina, Yin, Xiangchu & Zhang, Feng, 2016, Four new species of the genus Otacilia Thorell, 1897 from Hunan Province, China (Araneae, Phrurolithidae), ZooKeys 620, pp. 33-55 : 37-40

Taxon classification Animalia Araneae Phrurolithidae

Otacilia yangmingensis sp. n. Figs 4, 5, 6

Type material.

Holotype ♂, China, Hunan Province: Shuangpai County, Mt. Yangming, Wanshou Temple (26°06'27.490"N, 111°55'19.186"E), 1375 m a.s.l., 26 September 2015, Chi Jin leg. Paratypes: 5♀4♂, same data as for holotype; 1♂, Shuangpai County, Mt. Yangming, Hongjun Pavilion (26°04'34.924"N, 111°56'19.223"E), 1324 m a.s.l., 27 September 2015, Xiangbo Guo leg.; 1♂, Jiangyong County, Qianjiadong Town, Daboshui (25°24'25.70"N, 111°19'04.33"E), 224 m a.s.l., 3 October 2015, Jingchao He leg.

Etymology.

The species name refers to the holotype locality; adjective.

Diagnosis.

The male can be distinguished from all other armatissima group species, except Otacilia macrospora Fu. Zhang & Zhang, 2016, by the RTA base with a triangular process dorsally and by the absent DTA and can be distinguished from it by the long needle-like embolus (embolus stout and hook-shaped in Otacilia macrospora ) and the thumb-shaped tegular apophysis (tegular apophysis sickle-shaped in Otacilia macrospora ) (Figs 5 A–B, 6 A–B; Fu et al. 2016a: figs 16, 18, 22-23). The female of the new species can be distinguished from all other armatissima group species, except Otacilia macrospora Fu, Zhang & Zhang, 2016, by the copulatory openings connected with a pair of shallow concavities anteriorly, and the concavities have distinct anterior and inner lateral margins, and can be distinguished from it by the median plate (narrower than that of Otacilia macrospora ) and bursae (long ovoid, whereas they are spherical in Otacilia macrospora ) (Figs 5 E–G, 6 D–E; Fu et al. 2016a: figs 20-21, 25-26).

Description.

Male (Fig. 4 A–B). Total length 3.04-3.16 (n = 7). Holotype: body 3.16 long; carapace 1.58 long, 1.31 wide; abdomen 1.58 long, 0.97 wide. Carapace light yellowish brown, lateral margin black, middle with broad longitudinal black stripe, from ocular area to the posterior margin of carapace; fovea longitudinal, distinct. Eye diameters: AME 0.11, ALE 0.12, PME 0.10, PLE 0.10. Eye interdistances: AME–AME 0.03, AME–ALE 0.01, PME–PME 0.10, PME–PLE 0.05, ALE–PLE 0.09. MOA 0.25 long, front 0.23 wide, back 0.27 wide. Clypeus 0.14 high. Chelicerae with two strong anterior bristles; promargin with three well separated teeth and retromargin with six denticles close to each other. Labium and sternum light yellow. Legs light yellowish brown. Leg measurements: leg I 6.65 (1.66, 0.61, 1.89, 1.65, 0.84), II 5.36 (1.42, 0.47, 1.43, 1.29, 0.75), III 4.56 (1.22, 0.49, 1.01, 1.20, 0.64), IV 7.38 (2.00, 0.58, 1.75, 2.08, 0.97). Leg formula: 4123. Femur I with two dorsal spines and four prolateral spines, femur II with one dorsal spine and two prolateral spines, femora III–IV with one dorsal spine; tibia I with seven proventral spines and eight retroventral spines, tibia II with seven pairs of ventral spines; metatarsi I–II with four pairs of ventral spines. Abdomen oval, dorsum black, anterior half with a narrow dorsal scutum, posterior half with several black transversal stripes; venter light grey, with black longitudinal stripes.

Palp (Figs 5 A–D, 6 A–C). Femur distally with an apophysis on ventral side anda retrolateral concavity. RTA broad, with sharp apex, base with a triangular process dorsally. Embolus slender, needle-like, slightly curved. Tegular apophysis sclerotized and thumb-shaped, situated at the apex of the bulb, separate from the embolus base.

Female (Fig. 4 C–D). Total length 3.27-4.29 (n = 5). One paratype: body 4.29 long; carapace 1.72 long, 1.44 wide; abdomen 2.57 long, 1.62 wide. Carapace yellowish brown. Eye diameters: AME 0.11, ALE 0.10, PME 0.09, PLE 0.10. Eye interdistances: AME–AME 0.04, AME–ALE 0.01, PME–PME 0.11, PME–PLE 0.05, ALE–PLE 0.11. MOA 0.26 long, front 0.24 wide, back 0.31 wide. Clypeus 0.13 high. Leg measurements: I 6.63 (1.71, 0.65, 1.91, 1.56, 0.80); II 5.48 (1.44, 0.60, 1.42, 1.28, 0.74); III 4.67 (1.24, 0.56, 0.97, 1.20, 0.70); IV 7.29 (1.90, 0.63, 1.76, 2.00, 1.00). Leg formula: 4123. Femur I with two dorsal spines and four prolateral spines, femur II with one dorsal spine and three prolateral spines, femora III–IV with one dorsal spine; tibia I with eight pairs of ventral spines, tibia II with eight proventral spines and seven retroventral spines; metatarsus I with four pairs of ventral spines, metatarsus II with four proventral spines and three retroventral spines. Abdomen light grey, anterior half without dorsal scutum, posterior half dark with several indistinct chevron-like black stripes dorsally. Other characters as in male.

Epigyne (Figs 5 E–F, 6D): median plate narrow, with parallel lateral margin; copulatory openings situated centrally, covered with mating plugs (Fig. 5E), connected with a pair of shallow concavities anteriorly, and the concavities have distinct anterior and inner lateral margins. Vulva (Figs 5G, 6E): copulatory ducts thick, posteriorly swollen, connected to a pair of large, transparent long ovoid bursae; spermathecae located posteriorly and small, close to each other; bursae and spermathecae connected by slender, slightly curved connecting tubes.

Distribution.

Known only from the type localities, Hunan, China (Fig. 13).