Qiongthela baoting, Yu & Liu & Zhang & Wang & Li & Xu, 2020

Yu, Li, Liu, Fengxiang, Zhang, Zengtao, Wang, Yan, Li, Daiqin & Xu, Xin, 2020, Four new species of the primitively segmented spider genus Qiongthela from Hainan Island, China (Mesothelae, Liphistiidae), ZooKeys 911, pp. 51-66 : 51

Qiongthela baoting sp. nov. Figure 2

Type material.

Holotype: CHINA · 1 ♂; Hainan Province, Baoting County, Maogan Town, Zaye Village; 18.60°N, 109.57°E; alt. 410 m; 21 August 2017; D. Li, F.X. Liu and X. Xu leg.; XUX-2017-195 (matured on 25 August 2018 at HNU). Paratype: CHINA · 1 ♀; same data as for holotype; XUX-2017-196.

Diagnosis.

Male of Q. baoting sp. nov. can be distinguished from that of Q. baishensis , Q. jianfeng , Q. nui , Q. wuzhi , and the other three new species by the conductor with a pointed apex (Fig. 2A-D ); from all the other Qiongthela species by the contrategulum with four edges distally (Fig. 2A, D ), and by the marginal apophysis of the tegulum with a flake-like, semi-translucent apex (Fig. 2A, D, F ). Female of Q. baoting sp. nov. differs from that of Q. baishensis and Q. nui by the base of the lateral receptacular clusters close to the inners, and by the genital stalks of the inners thicker than those of the laterals (Fig. 2G, H ); from the other Qiongthela species by two paired receptacular clusters all along the anterior margin of the bursa copulatrix, with distinct genital stalks, and the inners larger than the laterals (Fig. 2G, H ).

Description.

Male (holotype, Fig. 1B ). Carapace dark brown; opisthosoma light brown, with 12 dark brown tergites, close to each other, the first 2-7 larger than others, and the fourth largest; sternum narrow, much longer than wide; a few fine pointed hairs running over the ocular area; chelicerae with promargin of cheliceral groove bearing 9 denticles of variable size; legs with firm hairs and spines; 7 spinnerets. Measurements: BL 12.39, CL 6.17, CW 5.62, OL 6.44, OW 4.52; ALE> PLE> PME> AME; leg I 17.60 (5.15 + 1.65 + 3.82 + 4.28 + 2.69), leg II 16.95 (4.71 + 1.48 + 3.67 + 4.30 + 2.79), leg III 19.26 (4.56 + 1.31 + 3.73 + 6.04 + 3.63), leg IV 25.77 (6.52 + 1.61 + 5.32 + 7.68 + 4.64).

Palp. Cymbium with a short, thick projection dorsally (Fig. 2F ); paracymbium unpigmented and unsclerotised prolaterally, with numerous setae at the tip (Fig. 2A, B ). Contrategulum with an irregular dentate edge proximally and four edges distally: the inner edge sharp, very short; the middle two edges serrate, one towards the proximal portion of contrategulum, the other ended at the centre of the contrategulum; the outer edge short, smooth, slightly sclerotised (Fig. 2A, D, F ). The marginal apophysis of tegulum long, wide basally, with a flake-like and semi-translucent apex distally (Fig. 2A, D ), a proximally directed terminal apophysis of tegulum with smooth margin, narrowing to a slightly hooked apex (Fig. 2A-E ). Conductor situated ventro-proximally on embolus, basal portion fused with embolus, distal free narrowing to a pointed apex (Fig. 2A-E ). Embolus largely sclerotised, with a wide, flat opening of sperm duct distally (Fig. 2A, D, E ).

Female (Fig. 1A ). Carapace dark brown; opisthosoma reddish brown, with 12 red-brown tergites, close to each other, the first 2-7 larger than the others, and the fourth largest; sternum narrow, nearly twice as long as wide; a few fine pointed hairs running over the ocular area; chelicerae robust with promargin of cheliceral groove containing 10 denticles of variable size; legs with firm hairs and spines; 7 spinnerets. Measurements: BL 16.35, CL 7.30, CW 6.12, OL 7.59, OW 6.25; ALE> PLE> PME> AME; palp 10.09 (3.66 + 1.01 + 2.60 + 2.82), leg I 11.78 (3.69 + 1.16 + 3.02 + 2.35 + 1.57), leg II 12.34 (3.94 + 1.44 + 2.69 + 2.58 + 1.70), leg III 10.99 (3.21 + 1.04 + 2.35 +2.90 + 1.47), leg IV 20.26 (5.85 + 1.93 + 4.17 + 5.45 + 2.86).

Female genitalia. Two pairs of receptacular clusters along the anterior margin of the bursa copulatrix, close to each other, the inner ones distinctly larger than the laterals, with genital stalks thicker than those of the laterals (Fig. 2G, H ).

Etymology.

The species epithet, a noun in apposition, refers to the type locality.

Distribution.

Hainan (Baoting), China.

GenBank accession number.

Holotype (XUX-2017-195): MN911989.

Figures

Figure 1. General somatic morphology of Qiongthela baoting sp. nov. and a map showing the type localities of seven known Qiongthela species and all sites of four new Qiongthela species in southern Vietnam and Hainan Island, China. A female (XUX- 2017 - 196) B male (XUX- 2017 - 195) C geographical map. Seven known species are indicated in brown solid circles, and four new species are indicated in red, blue, green, and black solid circles.

Figure 2. Male and female genital anatomy of Qiongthela baoting sp. nov. A palp prolateral view B palp ventral view C palp retrolateral view D-F palp distal view G vulva dorsal view H vulva ventral view. A-F XUX- 2017 - 195 (holotype) G-H XUX- 2017 - 196. Scale bars: 0.5 mm.