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Four new species of the family Liocranidae are described from China and Vietnam. The new genus Sinocranum gen. nov., is erected to accommodate S. menghai sp. nov. (♂♀) from China. Further new species described include Koppe ninger sp. nov. (♀) from China, Xantharia baizilongi sp. nov. (♂♀) from China and X. cucphuong sp. nov. (♂) from Vietnam. In addition, Xantharia is transferred from Miturgidae to Liocranidae. Koppe and Xantharia are reported from China and Vietnam, respectively, for the first time. [ABSTRACT FROM AUTHOR]

Three new species belonging to the kinabaluensis group of the trachelid genus Utivarachna Kishida, 1940 are reported from China and Vietnam: U. linyejiei sp. nov. (♂♀), U. tamdao sp. nov. (♂♀), and U. zhengguoi sp. nov. (♂♀). Type specimens are deposited in the Institute of Zoology, Chinese Academy of Sciences (IZCAS) in Beijing, China and the Vietnam National Museum of Nature (VNMN) in Hanoi, Vietnam. [ABSTRACT FROM AUTHOR]

Baiyuerius gen. nov., a new genus of the subfamily Coelotinae F. O. Pickard-Cambridge, 1893 is described, including five new species: B. daxi sp. nov. (1), B. pindong sp. nov. (1), B. tamdao sp. nov. (1), B. zhuping sp. nov. (1) and B. zuojiang sp. nov. (2), from southern China and northern Vietnam. Our molecular phylogenetic analyses support Baiyuerius gen. nov. as monophyletic and as a sister group of the newly established genus Yunguirius Li, Zhao & Li, 2023. [ABSTRACT FROM AUTHOR]

Six species of the family Corinnidae Karsch, 1880 are described from China and Vietnam. Fengzhen gen. nov. is erected to accommodate F. mengla sp. nov. (1) from China; Peng gen. nov. is erected to accommodate P. birmanicus (Thorell, 1897), comb. nov., P. borneensis (Yamasaki, 2017), comb. nov. and P. taprobanicus (Simon, 1897), comb. nov., transferred from Sphecotypus O. Pickard-Cambridge, 1895. Further new species described include Allomedmassa tamdao sp. nov. (1), Echinax baisha sp. nov. (1), Medmassa lingshui sp. nov. (1), and Spinirta shaoguan sp. nov. (1). The male of P. birmanicus is described for the first time. [ABSTRACT FROM AUTHOR]

Five new species of the spider family Araneidae Clerck, 1757 from Vietnam are described: Araneus eugenei sp. nov. (♂♀), A. ethani sp. nov. (♀), A. liami sp. nov. (♂♀), Hypsosinga ryani sp. nov. (♂♀), and H. zioni sp. nov. (♀). Diagnostic photographs of the habitus and copulatory organs are provided. Types of the new species are deposited in the Institute of Zoology, Chinese Academy of Sciences (IZCAS) in Beijing, China. [ABSTRACT FROM AUTHOR]

Fourteen symphytognathid species belonging to three genera are examined, including the descriptions of eight new species and two new genera from China, Vietnam, Thailand and Myanmar: Patu Marples, 1951: P. catba S. Li & Lin, sp. nov. (♂, Vietnam), P. dakou S. Li & Lin, sp. nov. (♂♀, China), P. damtao S. Li & Lin, sp. nov. (♂, Vietnam), P. jiangzhou S. Li & Lin, sp. nov. (♀, China), P. jidanweishi Miller, Griswold & Yin, 2009 (♂♀, China), P. nagarat S. Li & Lin, sp. nov. (♂♀, Thailand), P. nigeri Lin & S. Li, 2009 (♀, China), P. putao S. Li & Lin, sp. nov. (♀, Myanmar), P. qiqi Miller, Griswold & Yin, 2009 (♀, China) and P. xiaoxiao Miller, Griswold & Yin, 2009 (♂♀, China); Kirinua S. Li & Lin, gen. nov.: K. maguai S. Li & Lin, sp. nov. (♂♀, China) and K. yangshuo S. Li & Lin, sp. nov. (♂♀, China); Swilda S. Li & Lin, gen. nov.: S. longtou (Miller, Griswold & Yin, 2009), comb. nov. (♂♀, China) is transferred from Crassignatha Wunderlich, 1995 and S. spinathoraxi (Lin & S. Li, 2009), comb. nov. (♂♀, China) is transferred from Patu. Diagnoses, descriptions and illustrations are provided for new taxa, as well as a distribution map. The males of P. xiaoxiao and S. longtou are described for the first time. Type specimens of P. jidanweishi, P. nigeri, P. qiqi, P. xiaoxiao, S. longtou and S. spinathoraxi are re-examined and photographed. All Asian Patu species are revised and two species, P. kishidai Shinkai, 2009 and P. bispina Lin, Pham & S. Li, 2009, are transferred to Crassignatha and proposed as new combinations: Crassignatha kishidai comb. nov. and C. bispina comb. nov. In addition, DNA barcodes and genetic distances of ten species treated in this paper were obtained to confirm identification. [ABSTRACT FROM AUTHOR]

Four new species are described in two psilodercid genera, Qiongocera Li & Li, 2017 and Relictocera Li & Li, 2017: Qiongocera luoxuan Li & Li, sp. nov. (♂♀) from China, Relictocera wugen Li & Li, sp. nov. (♂♀) and R. sigen Li & Li, sp. nov. (♂) from Vietnam, and R. qianzi Li & Li, sp. nov. (♂♀) from Thailand. These genera were previously thought to be monotypic. In addition, one species of the genus Merizocera Fage, 1912 is transferred to Relictocera: Relictocera mus (Deeleman-Reinhold, 1995), comb. nov. (♂♀). The types of the new species are deposited in the Institute of Zoology, Chinese Academy of Sciences (IZCAS) in Beijing. [ABSTRACT FROM AUTHOR]