Male (Holotype). Habitus as in Fig. 1A and B and Fig. 4C and D. Total length 3.22, carapace 1.66 long, 1.43 wide.

Figure 1.  

Otacilia tongboshan sp. nov., male holotype. A Habitus, dorsal view; B Same, ventral view; C Palp, prolateral view; D Same, ventral view; E Same, retrolateral view; F Same, dorsal view. Abbreviations: CG – cymbial groove, dTA – distal tegular apophysis, Em – embolus, FA – femoral apophysis, PTA – prolateral tibial apophysis, rTA – retrolateral tegular apophysis, RTA – retrolateral tibial apophysis, SD – sperm duct. Scale bars: 0.5 mm (A, B), 0.1 mm (C–F).

Figure 2.  

Otacilia tongboshan sp. nov., female paratype. A Habitus, dorsal view; B Same, ventral view; C Epigyne, ventral view; D Vulva, dorsal view. Abbreviations: Bu – bursa, CD – copulatory duct, CO – copulatory opening, CT – connecting tube, FD – fertilisation ducts, GA – glandular appendage, MS – median septum, PP – posterior plate, Spe – spermathecae. Scale bars: 0.5 mm (A, B), 0.1 mm (C, D).

Figure 3.  

Otacilia tongboshan sp. nov., male palp and female epigyne, paratype. A Palp, prolateral view; B Same, ventral view; C Same, detail of Em, rTA and dTA, ventral view; D Same, retrolateral view; E Same, detail of RTA, retrolateral view; F Same, detail of Em, EG and rTA, retrolateral view; G Epigyne, ventral view; H Same, dorsal view. Abbreviations: Bu − bursa, CO − copulatory opening, CT − connecting tube, dTA − distal tegular apophysis, EG – embolic groove, FA − femoral apophysis, FD − fertilisation ducts, MS − median septum, rTA − retrolateral tegular apophysis, RTA − retrolateral tibial apophysis, Spe − spermathecae.

Figure 4.  

Otacilia tongboshan sp. nov. A, B Habitat, yellow arrows show the sampling points; C, D Male; E, F Female.

Eye sizes and interdistances: AME 0.07, ALE 0.07, PME 0.07, PLE 0.06; AME–AME 0.05, AME–ALE 0.02, PME–PME 0.12, PME–PLE 0.06, AME–PME 0.11, AME–PLE 0.16, ALE–ALE 0.23, PLE–PLE 0.39, ALE–PLE 0.10. MOA 0.26 long, frontal width 0.38, posterior width 0.49. Chelicerae with three promarginal and six retromarginal teeth. Sternum (Fig. 1B), nearly as long as wide, posterior end blunt. Leg measurements: I 5.73 (1.84, 0.4, 1.44, 1.38, 0.67); II 5.01 (1.56, 0.44, 1.25, 1.1, 0.66); III 3.67 (1.13, 0.28, 0.75, 1.01, 0.5); IV 4.84 (0.98, 0.34, 1.24, 1.52, 0.76). Leg spination (Fig. 1A, B): femora I d11, p1111, II d1, p111, III d1, IV d1; tibiae I v22222222, II v2222222; metatarsi I v2222, II v1222. Pedicel 0.13 long. Abdomen (Fig. 1A and B) 1.43 long, 1.14 wide, dorsal scutum covering more than 1/2 length of abdomen.

Colouration (Fig. 1A, B). Carapace yellow with conspicuous, irregular, dark yellow mottled markings radially along mid-line and arc-shaped dark stripes around margin. Chelicerae, endites and labium yellow. Sternum yellow, with yellow brown lateral margins. Legs yellow, with a few stripes on tibiae and metatarsi. Abdomen brown, with pair of small round yellow-brown and pair of large oval yellowish spots on medial dorsal scutum, three pale chevron-shaped stripes on sub-posterior part and one yellowish arc-shaped stripe posteriorly; venter with the symmetrical black patterns on the posterior half.

Palp (Fig. 1C−F and Fig. 3A−F). Femoral apophysis (FA) well-developed, nearly as wide as half of femoral maximum width. Tibia with two apophyses: a large, thick, very strong retrolateral apophysis (RTA), longer than tibia, strongly bent inwards towards concaved cymbial groove (CG), with a slightly curved tip and one relatively broad, ridge-like prolateral apophysis (PTA). Sperm duct (SD) O-shaped in ventral view, reaching medial part of tegulum. Retrolateral tegular apophysis (rTA) clavate, thick, directed retrolaterally. Distal tegular apophysis (dTA) sub-triangular, anterior part broader than posterior, membranous, arising from base of embolus and retrolateral part of sperm duct. Embolus (Em) hook-shaped, strongly curved, with a broad base and very narrow groove (EG).

Female (Paratype). Habitus as in Fig. 2A and B and Fig. 4E and F. Total length 4.13, carapace 1.59 long, 1.41 wide. Eye sizes and interdistances: AME 0.09, ALE 0.1, PME 0.08, PLE 0.09, AME–AME 0.05, AME–ALE 0.02, PME–PME 0.1, PME–PLE 0.06, AME–PME 0.08, AME–PLE 0.15, ALE–ALE 0.23, PLE–PLE 0.36, ALE–PLE 0.08. MOA 0.28 long, frontal width 0.39, posterior width 0.51. Leg measurements: I 6.2 (1.76, 0.47, 2, 1.39, 0.58); II 4.81 (1.37, 0.42, 1.39, 1.09, 0.54); III 3.69 (1.21, 0.24, 0.65, 1.08, 0.51); IV 5.48 (1.66, 0.42, 1.08, 1.81, 0.51). Leg spination (Fig. 2A and B): femora I d11 p1111, II d1 p111, III d1, IV d1; tibiae I v22222222, II v2222222, metatarsi I v2222, II v1222. Pedicel 0.06 long. Abdomen (Fig. 2A and B) 2.48 long, 1.65 wide.

Colouration (Fig. 2A and B). Paler than male.

Epigyne (Fig. 2C and D and Fig. 3G and H). Epigynal plate trident-like through integument, median septum (MS) sub-rectangular, anterior part slightly broader than posterior. Copulatory openings (CO) anteromedially located, oval, separated by almost the width of median septum. Posterior plate (PP) slightly sclerotised, medially concaved, covering spermathecae. Copulatory ducts (CD) relatively broad, posteriorly with pair of bursae laterally. Bursae (Bu) large, soybean-shaped, transparent, slightly touching, nearly covering 2/3 of valvae, with a slightly sclerotised base. Glandular appendages (GA) very short, indistinct in ventral view, mastoid-like through integument in ventral view, located on posterior of copulatory ducts. Connecting tubes (CT) thin, convergent from medio-lateral to subposteromedial part of vulva. Spermathecae (Spe) globular, slightly separated. Fertilisation ducts (FD) short, with a small spherical base, located at anterior of spermathecae, directed anterolaterally.

The male of the new species is similar to Otacilia guizhumao Liu & Li, 2022 in having a hook-shaped embolus and a thick, clavate retrolateral tegular apophysis (see Liu et al. (2022): 354, Suppl. 2: 54, fig. 82), but can be separated from it by the carapace with broad dark yellow mottled markings radially along mid-line (vs. dark brown markings radially on the surface) (cf. Fig. 1A and Liu et al. (2022): fig. 82A), the thick (vs. moderate) and very strong (vs. moderate) bending retrolateral tibial apophysis (cf. Fig. 1E and Liu et al. (2022): fig. 82E) and the subtriangular distal tegular apophysis (vs. oval) (cf. Fig. 1D and Liu et al. (2022): fig. 82D). The females resemble that of O. guizhumao in having the oval copulatory openings, the large, soybean-shaped, slightly separated bursae nearly covering 2/3 of vulvae, the thin convergent connecting tubes and the globular, slightly separated spermathecae (see Liu et al. (2022): 354, Suppl. 2: 54, figs. 84C and D), but can be distinguished from it by the carapace with broad dark yellow mottled markings radially along mid-line (vs. dark brown markings radially on the surface) (cf. Fig. 2A and Liu et al. (2022): fig. 84A) and the relative thin median septum (vs. broad) (cf. Fig. 2C and Liu et al. (2022): fig. 84C).

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

Known only from the type locality in Jiangxi Province, China (Fig. 5). This species has a wide distribution in Tongboshan National Nature Reserve, based on fieldwork.

Figure 5.  

The location of the Tongboshan National Nature Reserve in Jiangxi Province, China indicated by a large black dot.

It was collected from leaf litter by using the seiving method in areas of broad-leaved forests (Fig. 4A and B) in hilly areas.