Otacilia submicrostoma, 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 : 42-46

Taxon classification Animalia Araneae Phrurolithidae

Otacilia submicrostoma sp. n. Figs 10, 11, 12

Type material.

Holotype ♂, China, Hunan Province: Sangzhi County, Bamaoxi Town, Mt. Tianping, Watch Tower (29°47'11.854"N, 110°05'28.838"E), 1626 m a.s.l., 15 September 2015, Chi Jin leg. Paratypes: 11♀7♂, same data as for holotype; 19♀19♂, Sangzhi County, Bamaoxi Town, Mt. Tianping (29°46'07.921"N, 110°04'22.159"E), 1330 m a.s.l., 16 September 2015, Xiangbo Guo and Jingchao He leg.; 2♀6♂, Sangzhi County, Bamaoxi Town, Mt. Tianping (29°46'35.332"N, 110°05'54.474"E), 1520 m a.s.l., 17 September 2015, Chi Jin leg.

Etymology.

The species is named for its similarity to Otacilia microstoma Wang et al., 2015; adjectival.

Diagnosis.

The male can be distinguished from all other longituba group species, except Otacilia mira Fu, Zhang & Zhang, 2016, Otacilia mustela Kamura, 2008 and Otacilia parva Deeleman-Reinhold, 2001, by having only one tibial apophysis and no conductor and can be distinguished from them by the RTA base with a small triangular process (Figs 11 A–D, 12 A–C). The female of the new species can be easily distinguished from all of the other longituba group species by the long, S-shaped connecting peculiar tubes (Figs 11 E–F, 12D).

Description.

Male (Fig. 10 A–B). Total length 2.65-2.99 (n = 33). Holotype: body 2.99 long; carapace 1.52 long, 1.29 wide; abdomen 1.47 long, 1.04 wide. Carapace yellowish brown, with black marginal bands; fovea longitudinal, brown. Eye diameters: AME 0.09, 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 0.08. MOA 0.22 long, front 0.21 wide, back 0.30 wide. Clypeus 0.15 high. Chelicerae with two strong anterior bristles; promargin with three well-separated teeth and retromargin with seven denticles close to each other. Labium and sternum dark yellow. Legs light yellowish brown, all femora, patellae, tibiae, metatarsi distally with black annulus. Measurements of legs: leg I 5.45 (1.42, 0.54, 1.55, 1.30, 0.64), II 4.54 (1.20, 0.47, 1.18, 1.08, 0.61), III 3.96 (1.04, 0.44, 0.83, 1.03, 0.62), IV 5.72 (1.56, 0.50, 1.26, 1.57, 0.83). Leg formula: 4123. Femur I with two dorsal spines and four prolateral spines, femur II with one dorsal spine and one prolateral spine, femora III–IV with one dorsal spine; tibia I with six proventral spines and seven retroventral spines, tibia II with six pairs of ventral spines; metatarsus I with four pairs of ventral spines, metatarsus II with four proventral spines and three retroventral spines. Abdomen oval, dorsum black, anterior half with a narrow dorsal scutum, posterior half with several black transverse stripes; venter light grey, with black scattered patches.

Palp (Figs 11 A–D, 12 A–C). Femur distally with an apophysis on ventral side anda retrolateral concavity. RTA broad, with relatively sharp apex extending along the cym bium retrolaterally, basally with a small triangular process. Embolus slender, needle-like. Tegular apophysis and conductor absent.

Female (Fig. 10 C–D). Total length 3.02-3.48 (n = 32). One paratype: body 3.48 long; carapace 1.60 long, 1.36 wide; abdomen 1.88 long, 1.25 wide. Carapace yellowish brown. Eye diameters: AME 0.09, ALE 0.09, PME 0.10, PLE 0.10. Eye interdistances: AME–AME 0.04, AME–ALE 0.01, PME–PME 0.10, PME–PLE 0.06, ALE–PLE 0.09. MOA 0.25 long, front 0.20 wide, back 0.29 wide. Clypeus 0.14 high. Leg measurements: I 5.71 (1.47, 0.59, 1.64, 1.40, 0.61); II 4.87 (1.28, 0.52, 1.20, 1.23, 0.64); III 4.11 (1.09, 0.47, 0.85, 1.04, 0.66); IV 5.98 (1.60, 0.53, 1.33, 1.64, 0.88). 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; tibiae and metatarsi I and II with the same spination as male. Abdomen light grey, anterior half lacking dorsal scutum, posterior half dark with several indistinct chevron-like black stripes dorsally. Other characters as in male.

Epigyne (Figs 11 E–F, 12D): median plate absent; copulatory openings situated centrally, tiny and pore-like. Vulva (Figs 11G, 12 E–F): copulatory ducts thick and short, connected with a pair of large, transparent, long, ovoid bursae; spermathecae located posteriorly, large and ovoid, close to each other; bursae and spermathecae connected by strongly curved, S-shaped connecting tubes. Glandular appendages present, as long as one spermatheca’s diameter.

Distribution.

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