Otacilia xingdoushanensis, Yao & Irfan & Peng, 2019

Yao, Na, Irfan, Muhammad & Peng, Xianjin, 2019, Five new species of Otacilia Thorell, 1897 (Araneae: Phrurolithidae) from the Wuling Mountain Range, China, Zootaxa 4613 (2), pp. 290-304 : 301-302

Otacilia xingdoushanensis sp. nov.

Figs 9–11 .

Type material. Holotype: ♂, CHINA, Hubei Province: Enshi City, Xingdou Mountain National Nature Reserve, Sanxianchang , 30°02’46.03”N, 109°07’49.39”E, 1205 m a.s.l., 18 May 2017, leg. Guchun Zhou, Zongguang Huang, and Tian Tian. Paratype: 1♀, same data as holotype male .

Etymology. The specific epithet refers to the type locality.

Diagnosis. The male can be distinguished from all other species in the ‘ pseudostella ’ group by: cymbium with a tongue-shaped prolateral apophysis in retrolateral view in O. xingdoushanensis sp. nov. ( Figs 9E , 10A ), whereas absent in the other pseudostella group species (see Fu et al. 2016a, figs 7–15). The female can be distinguished from all other species in ‘ pseudostella ’ group (Fu et al. 2016a: figs 12, 13), the new species resembles O. ovata in having similar concavities in the atrium ( Figs 9 , 10 ; Fu et al. 2016a, figs 7–15), but can be distinguished by the following characters: The presence of an arc-shaped ridge between the copulatory opening in O. xingdoushanensis sp. nov. ( Figs 9C, D , 10D, E ), whereas absent in O. ovata (Fu et al. 2016a: figs 12, 13). Copulatory ducts without the knot found in O. ovata in dorsal view ( Figs 9D , 10E ) (Fu et al. 2016a figs 12, 13).

Description. Male (Holotype): Total length 3.47 (n = 1). Carapace 1.76 long, 1.62 wide, brown, abruptly narrowed anteriorly; fovea, cervical and radial grooves distinct. Clypeus 0.13 high. Chelicerae with 2 promarginal and 3 retromarginal teeth. Legs light yellow. Eye sizes and interdistances: AME 0.10; ALE 0.11; PME 0.12; PLE 0.12; AME–AME 0.04; AME–ALE 0.02; PME–PME 0.11; PME–PLE 0.06; ALE–PLE 0.09. MOA 0.28 long, front 0.26 wide, back 0.31 wide. Measurements of legs: leg I 5.69 (1.56, 0.57, 1.37, 1.44, 0.75), II 4.85 (1.17, 0.63, 1.17, 1.15, 0.73), III 4.33 (1.16, 0.56, 0.90, 1.11, 0.60), IV leg absent. Leg formula: I-II-III. Femora I with four pl spines; femora I–III with one do spine; femora II with two pl spines; tibia I with six pairs of ve spines, tibia II with six pv spines and five rv spines; metatarsus I with five pv spines and four rv spines, metatarsus II with four pv spines and three rv spines. Abdomen 1.71 long, 1.28 wide, oval, anterior half with a small dorsal scutum, posterior half with several chevrons. Right palp ( Figs 9F, G , 10 A–C). Femur mid-ventrally with an apophysis. Retrolateral tibial apophysis short, extending upward. Dorsal tibial apophysis longer than wide, extending upward with pointed end. Cymbium with several thick macrosetae; polateral cymbial apophysis tail-shaped, curved with blunt end. Conductor membranous, almost round. Sperm duct thick and sclerotized. Paraembolic apophysis short and sharp, sclerotized with pointed end. Embolus longer than wide, slightly curved with pointed end.

Female (paratype): Total length 4.16 (n = 1). Carapace; 1.86 long, 1.72 wide. Eye sizes and interdistances: AME 0.11, ALE 0.12, PME 0.09, PLE 0.11; AME–AME 0.05, AME–ALE 0.02, PME–PME 0.12, PME–PLE 0.06, ALE–PLE 0.10. MOA 0.27 long, front 0.26 wide, back 0.30 wide. Clypeus 0.14 high. Legs light yellow. Measurements of legs: leg I missing, II 5.09 (1.20, 0.63, 1.44, 1.14, 0.68), III 4.60 (1.27, 0.67, 0.98, 1.25, 0.43), IV 5.73 (2.06, 0.60, 1.02, 1.31, 0.74). Abdomen 2.29 long, 1.68 wide, grey. Other morphological characters same as in male. Epigyne ( Figs 9C, D , 10D, E ). Copulatory opening relatively large, separated by two-third width of epigynal plate. Median plate slit-like, more than two times longer than wide, narrowed posteriorly. Copulatory duct thick and short. Bursae oval, transparent. Spermatheca elliptical, separated by two-third width of the epigynal plate.

Distribution. Known only from the type locality ( Fig. 11 ).

Figures

FIGURE 9. Otacilia xingdoushanensis sp. nov., holotype male (right palp, A, E–G) and paratype female (B–D). A–B habitus, dorsal view C epigyne, ventral view D vulva, dorsal view E male right palp, retrolateral view F same, ventral view G same, prolateral view. Scale bars: 0.50 mm (A–B), 0.2 mm (C–G).

FIGURE 10. Otacilia xingdoushanensis sp. nov., holotype male (right palp, A–C) and paratype female (D–E). A male right palp, retrolateral view B same, ventral view C same, prolateral view D epigyne, ventral view E vulva, dorsal view. Scale bars: 0.2 mm (A–E).

FIGURE 11. Distribution records of new species of the genus Otacilia Thorell, 1897 from Wuling Mountain Range, China.