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The Pholcus yichengicus species group currently contains 47 species. It is mainly distributed in central and southern China, as well as northern Thailand.Pholcus changli Yao, sp. nov. is described as a new species of the P. yichengicus species group collected from northern China (Hebei Province).

The genus Khorata Huber, 2005 contains 51 species. It is distributed in the Indo-Malayan Region. Nine species have been recorded from Vietnam.Khorata ninhbinh sp. nov. is described as a new species from Vietnam. In addition, a list of all Khorata species from Vietnam is also provided.

China exhibits remarkable diversity of the spider genus Belisana Thorell, 1898, with 62 species recorded to date. However, the largest number of Belisana species was found in Yunnan Province (23 ssp.), while only seven species were found in Guizhou Province.In this paper, Belisana wangchengi sp. nov. as a new species is described from Guizhou Province, China.

The genus Wuliphantes Irfan, Wang & Zhang, 2023 is a small genus in the family Linyphiidae Blackwall, 1859, with only three species: W. guanshan (Irfan, Wang & Zhang, 2022), W. tongluensis (Chen & Song, 1988) and W. trigyrus Irfan, Wang & Zhang, 2023, all distributed in China.A new species: Wuliphantes yaan sp. nov. from Sichuan Province, China is reported. In addition, we re-described the type specimens of W. tongluensis (Chen & Song, 1988) that is similar to W. yaan sp. nov.

The genus Flagelliphantes Saaristo & Tanasevitch, 1996 was proposed by Saaristo & Tanasevitch, 1996 to accommodate three ex-Lepthyphantes species distributed in northern Eurasia. Male Flagelliphantes are easlily recognised by having a hood-shaped thumb on the embolus. The females have a long, S-shaped scape and the posterior median plate of the epigyne is grossly enlarged (“hypertrophied”).While examining Linyphiidae Blackwall, 1859 specimens from Yunxia Cave in China’s Jilin Province, we discovered a new cave-dwelling species of the genus Flagelliphantes, F. yunxia sp. n. In this paper, we provide detailed description and photos of its diagnostic somatic and genitalic features. It is the first record of the genus from China.

The spider family Ctenidae Keyserling, 1877 has a worldwide distribution with 584 species belonging to 49 genera. Amongst these, 141 species are from Asia, including 130 species assigned to Cteninae Keyserling, 1877.Nine new species belonging to three genera of Cteninae are reported from Asia: Amauropelma krabi sp. n. (female; Krabi, Thailand), Am. phangnga sp. n. (male; Phang Nga, Thailand), Am. saraburi sp. n. (male and female; Saraburi, Thailand); Anahita medog sp. n. (male and female; Tibet, China); Bowie ninhbinh sp. n. (male; Ninh Binh, Vietnam) and B. vinhphuc sp. n. (male and female; Vinh Phuc, Vietnam) from the robustus-species group; B. borneo sp. n. (male; Sabah, Malaysia) from the chinagirl-species group; B. engkilili sp. n. (female; Engkilili, Malaysia); B. sabah sp. n. (male and female; Sabah, Malaysia) from the scarymonsters-species group. The male of An. popa Jäger & Minn, 2015 and the female of B. fascination Jäger, 2022 (robustus-species group) are described for the first time. B. fascination Jäger, 2022 is reported from China for the first time. In addition, the DNA barcodes of all the species in this study were obtained, except for B. vinhphuc sp. n.

The spider family Ctenidae Keyserling, 1877 has a worldwide distribution with 580 species belonging to 49 genera, of which 109 species of six genera are distributed in Southeast Asia.Four new species of ctenid spiders are described from Southeast Asia: Anahita menglun sp. n. (Yunnan, China), Bowie haiphong sp. n. (Hai Phong, Vietnam), Bowie mengla sp. n. (Yunnan, China) and Bowie zhengi sp. n. (Yunnan, China). In addition, the female of Sinoctenus zhui Marusik, Zhang & Omelko, 2012 (Hainan, China) is described for the first time.

Amauropelma Raven, Stumkat & Gray, 2001 currently contains 24 species. It is distributed in Australia, India, Indonesia, Laos and Malaysia. This genus has not been found in China. Ctenus Walckenaer, 1805 comprises 213 known species. This genus is distributed worldwide. Currently, only two species, Ctenus lishuqiang Jäger, 2012 and Ctenus yaeyamensis Yoshida, 1998 are known to occur in China.Three new species of ctenid spiders are described from Xishuangbanna Tropical Botanical Garden in Yunnan Province, China: Amauropelma yunnan sp. nov., Ctenus banna sp. nov. and Ctenus yulin sp. nov. Amauropelma and Ctenus robustus Thorell, 1897 are reported from China for the first time.

The Pholcus yichengicus species-group currently contains 37 species. It is distributed in central and south-eastern China and Thailand, except for P. guani Song & Ren, 1994 from Liaoning Province, north-eastern China and P. clavatus Schenkel, 1936 which is widely distributed in the country.Pholcus bajia sp. nov. is described as a new species of the P. yichengicus species-group collected from Hebei Province, China.

The Pholcus yichengicus species-group currently contains 37 species. It is distributed in central and south-eastern China and Thailand, except for P. guani Song & Ren, 1994 from Liaoning Province, north-eastern China and P. clavatus Schenkel, 1936 which is widely distributed in the country. [ABSTRACT FROM AUTHOR]