Otacilia lata, 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 : 294-295

Otacilia lata sp. nov.

Figs 3 , 4

Type material. Holotype: ♂, CHINA: Hunan Province: Shimen County, Huping Mountain, Wangyuehu , 29°56′02.4″N, 110°54′20.99″E, 268 m a.s.l., 8 November 2017, leg. Bing Zhou, Cheng Wang, Jiahui Gan and Yuhui Gong. Paratypes: 3♂ 1♀, same data as holotype .

Etymology. The species name is derived from the Latin adjective “ lata ”, meaning “wide”, referring to the unique structure of the conductor in male palp. Adjective.

Diagnosis. Otacilia lata sp. nov. in armatissima group species resembles O. komurai ( Yaginuma, 1952) , but can be distinguished from it by the femoral apophysis being somewhat triangular in O. lata sp. nov. ( Figs 3 E–G, 4A–C), whereas rectangular in O. komurai ; the retrolateral tibial apophysis being wider anteriorly in retrolateral view in O. lata sp. nov. ( Figs 3G , 4C ), whereas narrower anteriorly in O. komurai ; and the conductor lamellate in ventral view in O. lata sp. nov. ( Figs 3G , 4C ), whereas ampullate in O. komurai (see Wang et al. 2012: figs 3E–G). Females of O. lata sp. nov. have the bursae oval and close together anteriorly, and the spermatheca transversely V-shaped ( Figs 3C, D , 4D, E ), whereas in O. komurai the bursae are kidney-shaped and slightly separated, and the spermathecae are longitudinally arcuate (see Wang et al. 2012: figs 3H, I).

Description. Male (Holotype): Total length 2.55–3.37 (n = 4). Holotype: body 2.55; carapace 1.29 long, 1.05 wide, yellowish brown, anteriorly abruptly narrow; fovea, cervical and radial grooves distinct. Chelicerae with 3 promarginal and 5 retromarginal teeth. Clypeus 0.13 high. Eye sizes and interdistances: AME 0.06, ALE 0.06, PME 0.07, PLE 0.08; AME–AME 0.04, AME–ALE 0.01, PME–PME 0.08, PME–PLE 0.05, ALE–PLE 0.08, AME–PME 0.07. MOA 0.23 long, front 0.18 wide, back 0.23 wide. Labium and endites brown. Legs light yellow. Measurements of legs: leg I 4.87 (1.19, 0.28, 1.60, 1.23, 0.57), II 3.98 (1.08, 0.30, 1.17, 0.87, 0.56), III 3.11 (0.79, 0.34, 0.78, 0.81, 0.39), IV 5.22 (1.38, 0.41, 1.22, 1.52, 0.69). Leg formula: IV-I-II-III. Femora I with four pl spines; femora I-IV with one do spine; femora II with two pl spines; tibiae I with eight pairs of ve spines, tibiae II with seven pairs of ve spines; metatarsi I with four pairs of ve spines, metatarsi II with four pv spines, three rv spines. Abdomen 1.31 long, 0.83 wide, grey, posterior half with five chevrons dorsally; venter grey. Palp ( Figs 3 E–G, 4A–C): Femur ventrally with somewhat triangular apophysis. Retrolateral tibial apophysis long, extending upwards, covering base of cymbium. Tip of the cymbium with several thick macrosetae. Conductor membranous, transparent, long, with blunt end. Tegular apophysis sinuous, with blunt end. Sperm duct strongly sclerotized. Embolus long, hook-shaped, apically covered by macrosetae.

Female (Paratype): Total length 3.05 (n = 1). Carapace 1.46 long, 1.18 wide. Eye sizes and interdistances: AME 0.06, ALE 0.05, PME 0.07, PLE 0.08; AME–AME 0.05, AME–ALE 0.02, PME–PME 0.09, PME–PLE 0.04, ALE–PLE 0.08; AME–PME 0.10. MOA 0.24 long, front 0.17 wide, back 0.23 wide. Clypeus 0.11 high. Legs light yellow. Measurements of legs: leg I 4.98 (1.20, 0.29, 1.73, 1.24, 0.52), II 3.94 (0.89, 0.39, 1.23, 0.85, 0.58), III 3.38 (0.96, 0.26, 0.85, 0.80, 0.51), IV 5.63(1.62, 0.50, 1.31, 1.45, 0.75). Leg formula: IV-I-II-III. Femora I with four pl spines; femora II with two pl spines; tibiae I with eight pairs of ve spines, tibiae II with seven pairs of ve spines; metatarsi I with four pairs of ve spines, metatarsi II with four pv spines, three rv spines. Abdomen grey, 1.53 long, 1.03 wide. Other morphological characters similar to those in male. Epigyne ( Figs 3C, D , 4D, E ): Copulatory openings oval. Copulatory ducts long and curved. Median plate longer than wide, narrow posteriorly. Bursae transparent, anteriorly located, close to each other. Spermathecae expanded.

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

Figures

FIGURE 3. Otacilia lata sp. nov., holotype male (A, E–G) and paratype female (B–D). A–B habitus, dorsal view C epigyne, ventral view D vulva, dorsal view E male left palp, prolateral view F same, ventral view G same, retrolateral view. Scale bars: 0.5 mm (A–B), 0.2 mm (C–G).

FIGURE 4. Otacilia lata sp. nov., holotype male (A–C) and paratype female (D–E). A male left palp, prolateral view B same, ventral view C same, retrolateral 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.