Four new species and one newly-recorded species of the genus Opopaea Simon, 1892 (Araneae, Oonopidae) from southern China, with a key to Chinese species Author Zhou, Yang College of Life Science, Shenyang Normal University, Shenyang 110034, Liaoning, China Author Bian, Dongju Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China Author Yang, Zizhong National-Local Joint Engineering Research Center of Entomoceutics, Dali University, Yunnan Dali, 671000, China Author Zhang, Zhisheng https://orcid.org/0000-0002-9304-1789 Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Life Sciences, Southwest University, Chongqing 400715, China Author Tong, Yanfeng https://orcid.org/0000-0002-4348-7029 College of Life Science, Shenyang Normal University, Shenyang 110034, Liaoning, China tyf68@hotmail.com Author Li, Shuqiang https://orcid.org/0000-0002-3290-5416 Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China text Zoosystematics and Evolution 2024 2024-03-27 100 2 325 347 http://dx.doi.org/10.3897/zse.100.120305 journal article http://dx.doi.org/10.3897/zse.100.120305 1860-0743-2-325 4B676BBBC8DD471CA5BC57ECDA275599 809E0A1CC5E556D6AB688918CC7A701A Opopaea yuhuang Tong & Li sp. nov. Figs 13 , 14 , 15 , 16G, H , 17 Type material. Holotype : ♂ (SYNU-596), China, Yunnan , Mile City, Yuhuang Park, 20 November 2021, W. Cheng leg. Paratypes : 1♀ (SYNU-597), 2♂2♀ (SYNU-619-622), same data as holotype. Etymology. The specific name refers to the type locality and is a noun in apposition. Diagnosis. This new species is similar to Opopaea syarakui (Komatsu, 1967) in the morphology of the scuto-pedicel region and the triangular postgynal depression, but can be distinguished by the interrupted posterior scutal ridge (Fig. 14H ) vs. not interrupted ( Suzuki et al. 2023 : fig. 5O) and the broad tip of palpal bulb (Fig. 15A, I ) vs. gradually narrowed tip ( Suzuki et al. 2023 : fig. 5K). Description. Male (holotype). Measurements: TL: 1.65; CL: 0.69; CW: 0.55; AL: 1.02; AW: 0.64; ALE: 0.08; PME: 0.07; PLE: 0.07; EGW: 0.22; ALE-ALE: 0.03; ALE-PLE: 0.01; PME-PME: 0; PLE-PME: 0; CBL: 0.21; CBW: 0.08: PTL: 0.31; FI: 0.18; FML: 0.09. Colouration: yellow, abdominal interscutal areas creamy-white, booklung covers brown, pedipalps reddish-brown. Habitus as in Fig. 13A, C, E . Carapace (Fig. 13B, F ): oval in dorsal view; sides with longitudinal streaks; median area smooth with rows of setae at lateral edges. Eyes (Fig. 13B, G ): ALE largest, PLE smallest; posterior eye row recurved viewed from above, procurved from front; ALE separated by less than their radius, ALE-PLE separated by less than ALE radius, PME touching throughout most of their length, PLE-PME separated by less than PME radius. Clypeus height about 1.0 times ALE diameter (Fig. 13G ). Sternum (Fig. 13D ) longer than wide, fused to carapace; surface smooth; radial furrows present between coxae I-II, II-III and III-IV, with rows of small pits; endites anteriorly with a small, sharply-pointed projection. Abdomen: booklung covers large, ovoid, without setae. Pedicel tube short, ribbed, with small, dorsolateral triangular extensions, scuto-pedicel region lower than pedicel diameter, with arched scutal ridges, interrupted medially, with straight upper scutal ridge (Fig. 13H ). Palp (Fig. 15A-K ): femur small, about 1/4 length of patella and medially attached to patella; patella strongly enlarged, elongate oval; tibia small, rounded; cymbiobulbus shorter than the patella; bulb ventrally strongly bulging, tip broad, with a large prolateral folded ridge (prr). Figure 13. Opopaea yuhuang sp. nov., male. A, C, E Habitus, dorsal, ventral and lateral views; B, D, F, G Prosoma, dorsal, ventral, lateral and anterior views; H Abdomen, anterior view. Abbreviations: boc = booklung covers; dte = dorsolateral, triangular extensions; sr = scutal ridge; usr = upper scutal ridge. Scale bars: 0.4 mm. Figure 14. Opopaea yuhuang sp. nov., female. A, C, E Habitus, dorsal, ventral and lateral views; B, D, F, G Prosoma, dorsal, ventral, lateral and anterior views; H Abdomen, ventral view. Abbreviations: asr = anterior scutal ridge; boc = booklung covers; psr = posterior scutal ridge. Scale bars: 0.4 mm. Figure 15. Opopaea yuhuang sp. nov., male left palp. A, I Prolateral view; B, E Cymbiobulbus, prolateral and retrolateral views; C, F, H Distal part of cymbiobulbus, prolateral, retrolateral and dorsal views; D, K Retrolateral view; G, J Dorsal view. Abbreviation: prr = prolateral ridge. Scale bars: 0.1 mm ( A, B, D, E, G, I-K ); 0.05 mm ( C, F, H ). Figure 16. Female copulatory organ. A, B Opopaea mangun sp. nov.; C, D Opopaea taibao sp. nov.; E, F Opopaea wenshan sp. nov.; G, H Opopaea yuhuang sp. nov.; A, C, E, G Ventral view; B, D, F, H Dorsal view. Abbreviations: ap = apodeme; asr = anterior scutal ridge; ass = arch-shaped sclerite; ga = globular appendix; na = nail-like process; nle = needle-like extension; pd = postgynal depression; pls = paddle-like sclerite; psr = posterior scutal ridge. Scale bars: 0.2 mm. Figure 17. Distribution records of four new species and one newly-recorded species from southern China. 1. Opopaea foveolata Roewer, 1963; 2. Opopaea mangun sp. nov.; 3. Opopaea taibao sp. nov.; 4. Opopaea wenshan sp. nov.; 5. Opopaea yuhuang sp. nov. Female. As in male, except as noted. Measurements: TL: 1.84; CL: 0.68; CW: 0.56; AL: 1.21; AW: 0.74; ALE: 0.07; PME: 0.06; PLE: 0.06; EGW: 0.21; ALE-ALE: 0.04; ALE-PLE: 0.01; PME-PME: 0; PLE-PME: 0. Habitus as in Fig. 14A, C, E . Copulatory organ (Figs 14H , 16G, H ): posterior margin of epigastric scutal ridge (asr) smoothly triangular, posterior scutal ridge (psr) adjacent to asr, interrupted medially, postgynal depression (pd) small; dorsally with nail-like process (na) connected to paddle-like sclerite (pls). Distribution. Known only from the type locality.