Olios lincangensis Hu, Zhang & Liu, 2025

Zhang, He, Niu, Weitao, Liu, Jie, Wang, Caijun & Hu, Changhao, 2025, Three new species of the genus Olios Walckenaer, 1837 (Araneae, Sparassidae) from southern China, ZooKeys 1245, pp. 343-356 : 343-356

Olios lincangensis Hu, Zhang & Liu sp. nov.

Figs 5 , 6 , 7 , 8

Type material.

Holotype male: China • Yunnan Province: Lincang City, Yongde County, Daxueshan Yi, Lahu, Dai Township, Daxueshan Mountain , 24.11470°N, 99.64802°E, elevation 3428 m, 13 November 2021, Huachang Li leg. Paratype: 1 female, with same data as for holotype .

Etymology.

The specific name is derived from the type locality: Lincang City; adjective.

Diagnosis.

The male of Olios lincangensis Hu, Zhang & Liu , sp. nov. resembles that of O. feldmanni Strand, 1915 (cf. Fig. 5 A – C vs. figs 294–295 in Jäger 2020) by having a spike-like dorsal part of retrolateral tibial apophysis, complex ventral part of the retrolateral tibial apophysis, well-developed conductor arising sub-centrally from the tegulum in an 11 - o’clock-position, and an embolus arising from the tegulum in a 6 - o’clock-position, but can be recognized by: 1) main part of ventral part of retrolateral tibial apophysis irregularly thick forked, 2) tegulum with a small nipple-shaped tegular apophysis, and 3) conductor with two apophyses (see arrows in Fig. 5 A ) (vs. main part of ventral part of retrolateral tibial apophysis clavate, tegular apophysis absent, conductor without apophysis in O. feldmanni ).

The female of Olios lincangensis Hu, Zhang & Liu , sp. nov. resembles that of O. croseiceps (Pocock, 1898) (cf. Fig. 6 A – D vs. figs 236–240 in Jäger 2020) by having an ungulate-shaped epigynal field, medially located copulatory ducts and large spermathecae, but can be recognized by the fertilization ducts laterally located, the distance between the basal fertilization ducts almost equal to the width of the epigynal field (vs. fertilization ducts medially located, the distance between basal fertilization ducts almost 1 / 3 of the width of the epigynal field in O. croseiceps ).

Description.

Male (holotype): Total length 12.5; DS 5.7 long, 5.8 wide; OS 7.1 long, 5.0 wide. Eyes: AME 0.31; ALE 0.33; PME 0.21; PLE 0.35; AME – AME 0.24; AME – ALE 0.29; PME – PME 0.54; PME – PLE 0.49; AME – PME 0.28; ALE – PLE 0.24; CH AME 0.17; CH ALE 0.22. Measurements of palp and legs [I: missing]: Pp: 8.5 (2.6, 0.9, 1.4, -, 3.6); II: 28.0 (7.8, 2.2, 8.1, 7.7, 2.2); III: 21.3 (6.6, 2.0, 5.7, 5.2, 1.8); IV: 23.6 (7.1, 2.0, 6.4, 6.3, 1.8). Spination: Pp: 131, 000, 0001; legs: Fe II – IV 323; Pa II – IV 000; Ti II – IV 2124; Mt II – III 2024, IV 3025. Cheliceral furrow with 2 anterior and 5 posterior teeth.

Palp (Fig. 5 A – C ): As in diagnosis. Ti short, length of Ti almost 1 / 3 of cymbium. RTA well developed, vRTA with three apices in retrolateral view (see arrows in Fig. 5 C ). Tegulum with a small nipple-shaped TA. C tubular, with two aphophyses on prolateral part (see arrows in Fig. 5 A ). E thick and filiform.

Colouration (Fig. 7 A, B ): DS and sternum orange. Legs yellow to orange. OS dorsally yellow, with some brown marks, ventrally brown, with two yellow longitudinal lines.

Female (paratype): Total length 14.1; DS 6.1 long, 6.7 wide; OS 8.3 long, 5.0 wide. Eyes: AME 0.35; ALE 0.32; PME 0.17; PLE 0.29; AME – AME 0.34; AME – ALE 0.29; PME – PME 0.67; PME – PLE 0.65; AME – PME 0.38; ALE – PLE 0.30; CH AME 0.14; CH ALE 0.23. Measurements of palp and legs: Pp: 7.4 (2.2, 0.9, 1.5, -, 2.8); I: 23.5 (6.8, 2.3, 6.2, 6.2, 2.0); II: 25.9 (7.7, 2.4, 7.0, 6.8, 2.0); III: 18.7 (5.9, 1.8, 4.9, 4.4, 1.7); IV: 20.2 (6.1, 1.7, 5.3, 5.2, 1.9). Leg formula: II-I-IV-III. Spination: Pp: 131, 020, 1111, 1012; legs: Fe I 223, II – III 323, IV 321; Pa I – IV 000; Ti I – III 2024, IV 2004; Mt I – III 2024, IV 3034. Cheliceral furrow with 2 anterior and 5 posterior teeth.

Epigyne (Fig. 6 A – D ): As in diagnosis. Epigynal field rounded rectangular, longer than wide. Length of ES almost 2 / 3 of the length of epigynal field. Internal duct system obviously sclerotized. Length of CD almost half of the length of S. S large, with rough anterior part. FD long and narrow.

Colouration (Fig. 7 C – D ): As in male, but generally darker.

Distribution.

China (Yunnan Province) (Fig. 8 ).

Figures

Figure 5. Olios lincangensis Hu, Zhang & Liu, sp. nov., left male palp. A. Prolateral, arrows point to the two apophysis of prolateral conductor; B. Ventral; C. Retrolateral, arrows point to the three apices of vRTA. Abbreviations: C = conductor, dRTA = dorsal part of retrolateral tibial apophysis, E = embolus, TA = tegular apophysis, vRTA = ventral part of retrolateral tibial apophysis. Scale bars: 0.5 mm.

Figure 6. Olios lincangensis Hu, Zhang & Liu, sp. nov., female. A. Epigyne, ventral; B. Vulva, dorsal; C. Vulva, dorsal, the membrane between FD removed; D. Schematic course of right internal duct system, dorsal. Abbreviations: CD = copulatory duct, CO = copulatory opening, ES = epigynal slit, FD = fertilization duct, LL = lateral lobes, S = spermathecae. Scale bars: 0.5 mm.

Figure 7. Olios lincangensis Hu, Zhang & Liu, sp. nov., habitus. A, B. Male (A. Dorsal; B. ventral); C, D. Female (C. Dorsal; D. Ventral). Scale bars: 2 mm.

Figure 8. Distribution map of the three new Olios species 1 O. biprocessus Hu, Zhang & Liu, sp. nov. 2 O. uniprocessus Hu, Zhang & Liu, sp. nov. 3 O. lincangensis Hu, Zhang & Liu, sp. nov.