Otacilia lubrica, Mu & Zhang, 2021

Mu, Yannan & Zhang, Feng, 2021, Seven new Otacilia Thorell, 1897 species from China (Araneae: Phrurolithidae), Zootaxa 5032 (4), pp. 533-548 : 538

Otacilia lubrica sp. nov. (光滑Dzḇü)

Fig. 3

Type material. Holotype ♂ (CQCK-18-03): CHINA: Chongqing City, Chengkou County, Longtian Town , Wuli village (32°04.269′N, 108°39.914′E, 1286 m), 16 Mar. 2018, leg. Luyu Wang.

Paratypes: 11♂ 16♀, with same data as holotype; CHINA : 6♂ 1♀ (CQCK-18-02), Chongqing City, Chengkou County, Longtian Town , Wuli village , hillside behind primary school (32°03.726′N, 108°40.351′E, 1206 m), 16 Mar. 2018, leg. Zhisheng Zhang.

Etymology. This specific name is derived from the Latin word “lubricus”, meaning smooth, referring to the smooth glossy texture of the carapace; adjective.

Diagnosis. This new species resembles O. fabiformis Liu et al., 2019 , but the males can be distinguished from it by the long and transverse embolus (vs shorter and directed distally), the long and thin conductor (vs triangular), and the wide RTA and long DTA (vs thin RTA and DTA) (compare Fig. 3C–F with fig. 6B–E in Liu et al. 2019). Females differ from O. fabiformis by the globular glandular appendage (vs absent) and the large and globular spermathecae (vs small) (compare Fig. 3G–H with fig. 7B–C in Liu et al. 2019).

Description. Male. Total length 2.20–2.32 (n=18). Holotype: total length 2.20; carapace 1.17 long, 0.98 wide; abdomen 1.03 long, 0.79 wide. Carapace brown, higher in central area, radial striae indistinct. Cervical groove indistinct, fovea thin and short. Eye sizes and interdistances: AME 0.04, ALE 0.07, PME 0.04, PLE 0.07; AME–AME 0.03, AME–ALE 0.02, ALE–ALE 0.15, PME–PME 0.07, PME–PLE 0.06; PLE–PLE 0.26, ALE–PLE 0.05. MOA 0.16 long, anterior width 0.12, posterior width 0.14. Clypeal height 0.09. Chelicerae brown, with three promarginal and two retromarginal teeth. Sternum yellow. Legs yellow-brown. Measurements of legs: I 3.97 (1.06, 0.43, 1.08, 0.94, 0.46), II 3.48 (0.95, 0.40, 0.83, 0.82, 0.48), III 3.00 (0.82, 0.31, 0.59, 0.76, 0.52), IV 3.15 (1.12, 0.35, 0.94, 1.07, 0.67). Spination: femora I–IV d1b, femur I pl 111, femur II pl 1, tibia I v 222222, tibia II pv 111111 rv 1111, metatarsus I pv 1111 rv 111, metatarsus II pv 1111 rv 111. Abdomen oval, blackish-gray, with small thin dorsal scutum anteriorly, two V-shaped gray spots medially, and three chevron stripes posteriorly.

Palp as in Fig. 3C–F . Femoral apophysis weakly sclerotized, well-developed. RTA thick and wide, with Wshaped margin in ventral view; DTA long and thin, with hooked tip. Bulb pyriform, sperm duct strongly sclerotized, surrounding the membranous conductor; tegular apophysis small, triangular; embolus short and straight.

Female. Total length 2.70–2.84 (n=17). One paratype: total length 2.80; carapace 1.18 long, 1.03 wide; abdomen 1.62 long, 1.11 wide. Eye sizes and interdistances: AME 0.05, ALE 0.07, PME 0.05, PLE 0.07; AME–AME 0.03, AME–ALE 0.02, ALE–ALE 0.15, PME–PME 0.07, PME–PLE 0.06, PLE–PLE 0.27, ALE–PLE 0.05; MOA 0.16 long, anterior width 0.12, posterior width 0.16. Clypeal height 0.07. Legs yellow. Measurements of legs: I 3.65 (0.88, 0.33, 1.01, 0.95, 0.48), II 3.44 (0.93, 0.42, 0.83, 0.80, 0.46), III 3.16 (0.88, 0.37, 0.60, 0.82, 0.49), IV 4.35 (1.12, 0.44, 0.90, 1.22, 0.67). Spination: femur I–IV d1b, femur I pl 111, femur II pl 11, tibia I v 222222, tibia II pv 111111 rv 11111, metatarsus I pv 1111 rv 111, metatarsus II pv 1111 rv 111. Abdomen with pair of oval gray spots and black triangular pattern anteriorly, and four chevron stripes posteriorly. Other characters as male.

Epigyne as in Fig. 3G–H . Epigynal plate poorly sclerotized, slightly transparent. Copulatory openings small, copulatory ducts long and thin, slightly curved; glandular appendages relatively large, globular; bursa large, oval, weakly sclerotized; spermathecae small, globular; fertilization ducts short, located at anterior of spermathecae.

Distribution. China (Chongqing City) ( Fig. 8).

Figures

FIGURE 3. Otacilia lubrica sp. nov., male holotype and female paratype. A. Male, dorsal view; B. Female, dorsal view; C. Tibial apophyses, dorsal view; D. Male left palp, prolateral view; E. Same, ventral view; F. Same, retrolateral view; G. Epigyne, ventral view; H. Same, dorsal view. Abbreviations: B—bursa; C—conductor; CD—copulatory duct; CO—copulatory opening; DTA—dorsal tibial apophysis; E—embolus; FA—femoral apophysis; FD—fertilization duct; MS—median septum; RTA— retrolateral tibial apophysis; S—spermatheca; SD—sperm duct; TA—tegular apophysis.