Otacilia menghuo sp. nov. (ZȆÞffifl)

Figs 1G–H, 8, 9

Type material. Holotype ♂: CHINA: Sichuan Province: Ya’an City, Shimian County, Liziping National Natural Reserve, Menghuo Village, Bodhisattva Protection Station (28°52.91′N, 102°21.46′E, 2724 m elev.), 26 Jul. 2016, leg. Chi Jin.

Paratypes: 7♀, with same data as holotype; 1♂, Sichuan Province, Ya’an City, Shimian County, Liziping Town, Menghuo Village (28°54.464′N, 102°22.210′E, 2710 m elev.), 7 Jun. 2016, leg. Xiangbo Guo.

Etymology. The species name is derived from the type locality; noun in apposition.

Diagnosis. Males of this new species resemble O. yangi Zhang, Fu & Zhu, 2009 in lacking a TA (see Fig. 9C and fig. 3 in Zhang et al. 2009), but can be distinguished by the wide RTA with a bulge medially (vs thin and without bulge, compare Fig. 9B with fig. 4 in Zhang et al. 2009), and the hook-shaped embolus (vs slightly curved embolus, compare Fig. 9C with fig. 3 in Zhang et al. 2009). Females can be distinguished by the large oval copulatory openings (vs small and circular, compare Fig. 9E with fig. 7 in Zhang et al. 2009) and the large oval spermathecae (vs small and circular, compare Fig. 9F with fig. 8 in Zhang et al. 2009).

Description. Male: total length 3.29–3.51 (n=2). Holotype (Fig. 1G): total length 3.29, carapace 1.06 long, 1.42 wide (CW); abdomen 1.69 long, 1.12 wide. Eye sizes and interdistances: AME 0.09, ALE 0.09, PME 0.07, PLE 0.08; AME–AME 0.06, AME–ALE 0.01, ALE–ALE 0.24, PME–PME 0.10, PME–PLE 0.07, PLE–PLE 0.40, ALE–PLE 0.11. Eye area 0.52 wide (EAW), cephalic region 0.80 wide (CRW), EAW/CRW 0.65. CRW/CW 0.56. MOA 0.24 long, anterior width 0.21, posterior width 0.26. Clypeal height 0.13 (CH), CH /AME 1.44. Chelicerae with three promarginal and five retromarginal teeth. Carapace light brown, with light ring around submargin of carapace. Abdomen oval, gray, with rectangular dorsal scutum anteriorly, four black chevron stripes posteriorly (Fig. 1G).

Palp as in Figs 8A–D, 9A–D. FA strongly protruding, in distal half of femur. RTA long, broad at base, swollen medially, curved and acicular at tip (Figs 8B, 9B). Tegulum oval, with high ridge at the top of tegulum, and wide membranous area obliquely upward from base to end of ridge (Figs 8C, 9C). Tegulum water-drop shaped in prolateral and retrolateral view (Figs 8A–B, 9A–B). TA absent. Embolus strongly curved, hook-shaped.

Female: total length 3.65–4.23 (n=7). One paratype (Fig. 1H): total length 4.23, carapace 1.70 long, 1.44 wide (CW); abdomen 2.53 long, 1.74 wide. Eye sizes and interdistances: AME 0.09, ALE 0.11, PME 0.09, PLE 0.11; AME – AME 0.04, AME – ALE 0.01, ALE – ALE 0.23, PME – PME 0.08, PME – PLE 0.05, PLE – PLE 0.36, ALE – PLE 0.09. Eye area 0.51 wide (EAW), cephalic region 0.78 wide (CRW), EAW/CRW 0.65. CRW/CW 0.54. MOA 0.24 long, anterior width 0.20, posterior width 0.27. Clypeal height 0.13 (CH), CH / AME 1.44. Carapace light brown, with light ring around submargin of carapace and darker petal-shaped markings either side of fovea. Abdomen without DS, other characters as for male except lighter color (Fig. 1H) .

Epigyne as in Figs 8E–F, 9E–F. Epigynal plate weakly sclerotized. Median septum wide, nearly parallel on both sides, slightly wider than one diameter of spermathecae (Figs 8E, 9E). Copulatory openings moderate in size, located on both sides of anterior of septum. Copulatory ducts short and wide, straight, splayed. Bursa long, sclerotized. Connecting tube short and straight, thinner than CD. Glandular appendage short and transverse (Fig. 9F). Spermathecae moderate in size, oval and transverse, close to each other. Fertilization ducts slender, located at anterior of spermathecae.

Measurements of legs:

Distribution. China (Sichuan Province).