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Three new species of the genera Thiania C. L. Koch, 1846 and Yaginumaella Prószyński, 1979 are described and named as T. bamian sp. nov. (♂♀), T. flacata sp. nov. (♀) and Y. curvata sp. nov. (♂♀), from Hunan Province, China. Detailed descriptions, photos of somatic features and copulatory organs, as well as a distribution map are provided. Nucleotide data for the barcoding gene, cytochrome c oxidase subunit I (COI) of T. bamian sp. nov. (♂♀) and Y. curvata sp. nov. (♀) are provided. [ABSTRACT FROM AUTHOR]

Two new spider species of the genus Trachelas L. Koch, 1872 are described from China: Trachelaskavanaughi sp. nov. (♀) and Trachelasventriosus sp. nov. (♀). The male of Trachelasgaoligongensis Jin, Yin & Zhang, 2017 is described for the first time. Illustrations of the body and copulatory organs and a distribution map are provided., Competing Interests: The authors have declared that no competing interests exist., (Gang Tang, Wen-long Yan, Yi Zhao, Xian-jin Peng.)

The genus Tricholathys , found for the first time in China, is surveyed and seven new species, T.burangensis sp. nov. (♂♀, Thibet), T.chenzhenningi sp. nov. (♂♀, Qinghai), T.hebeiensis sp. nov. (♀, Hebei), T.lhunzeensis sp. nov. (♂♀, Tibet), Tricholathysrelictoides sp. nov. (♂♀, Xinjiang), T.serrata sp. nov. (♂♀, Tibet), and T.xizangensis sp. nov. (♂♀, Tibet), are described. A new combination is proposed for Tricholathysalxa (Tang, 2011) comb. nov. , ex. Argenna Thorell, 1870. Descriptions of all new species are provided, together with digital images, illustrations, and a distribution map. The DNA barcode information of four recently collected species is also provided., Competing Interests: The authors have declared that no competing interests exist., (Lu-Yu Wang, Xian-Jin Peng, Zhi-Sheng Zhang.)

The present paper deals with three species of the genus Mimetus from China, including Mimetus echinatus Wang, 1990, Mimetus lamelliformis sp. n. (male), and Mimetus wangi sp. n. (female and male). Mimetus lamelliformis differs from the related species Mimetus echinatus Wang, 1990 by: cymbial tip with several slender long macrosetae; cymbium boat-shaped, length/width ratio about 3/1 in retrolateral view; vexillum about 1/2 length of cymbium in retrolateral view. Mimetus wangi sp. n. differs from the related species Mimetus sinicus Song & Zhu, 1993 by: the opisthosoma with a pair of distinct outgrowths in the dorsum; sperm duct nearly horizontal; spermathecae kidney shaped and contiguous. Photos of body and copulatory organs, line drawings of copulatory organs, as well as the locality map are provided.

Two new species of the orb-weaver genus Chorizopes from Yunnan Province, China are described: Chorizopes albus sp. n . (male and female) from the Gaoligong Mountains and Ailao Mountains, and Chorizopes longus sp. n. (male and female) from the Gaoligong Mountains. Chorizopes albus sp. n . can be distinguished from the related species Chorizopes shimenensis by: 1) median apophysis widest at the middle part versus widest at the base in the latter; 2) median apophysis without the dorsal spur found in that of the latter; 3) spermathecae spherical versus ovoid in the latter; 4) having one pair of large white spots on posterior lateral area of abdomen versus having two pairs of crescent white patches with dark edges on dorsal abdomen in the latter. Chorizopes longus sp. n . can be separated from the similar species Chorizopes tumens by: 1) the median apophysis having a knob on the distal half versus having a knob on the basic half in the latter; 2) male palp having a spur versus absent in the latter; 3) the width of the groove between the paracymbium and cymbium as thick as the paracymbium versus two times as thick as the paracymbium in the latter; 4) copulatory duct attached on anterior ventral of the spermatheca versus on anterior dorsal in the latter. Photos of body and copulatory organs, line drawings of copulatory organs, as well as the distribution data are provided. The type specimens are deposited in the College of Life Sciences, at the Hunan Normal University (HNU) and the Museum of Tongren University (MTU).

The present paper deals with two new species of Yaginumaella , Yaginumaella lushuiensis sp. n. (female and male) and Yaginumaella pseudoflexa sp. n. (female and male). The male of Yaginumaella lushuiensis sp. n. differs from the related species Yaginumaella flexa Song & Chai, 1992 in ventral view of palpal organ. The female of Yaginumaella lushuiensis Peng, Tang & Li, 2008 in ventral view of palpal organ: 1) basal portion of embolus touches the margin of genital bulb. 2) distal portion of tibial apophysis covers the posterior margin of cymbium and far away from the margin of genital bulb. The female of sp. n. differs from the related species Yaginumaella urbanii Żabka, 1981 by: 1) hoods locate at the anterior area of epigynum and far away from the copulatory openings; 2) epigynum about circular; 3) copulatory openings transverse. The male of Yaginumaella pseudoflexa sp. n. differs from the related species Yaginumaella bulbosa Peng, Tang & Li, 2008 in ventral view of palpal organ: 1) basal portion of embolus touches the margin of genital bulb. 2) distal portion of tibial apophysis covers the posterior margin of cymbium and far away from the margin of genital bulb. The female of Yaginumaella pseudoflexa sp. n. differs from the related species Yaginumaella urbanii Żabka, 1981 by: epigynum about as long as wide; hoods locate at the anterior area of the epigynum, above the outside area of the copulatory openings and far away from the copulatory openings. Photos of body and copulatory organs, line drawings of copulatory organs, as well as the locality map are provided. Descriptions of morphology are given.

Five new species of Phintella are described from the Wuling Mountains, China: Phintellaarcuata sp. n. (male and female), Phintellalevii sp. n. (female), Phintellapanda sp. n. (female), Phintellapulcherrima sp. n. (male and female), and Phintellawulingensis sp. n. (female). Distribution data, detailed morphological characteristics, and illustrations of body and genital organs are presented.

Two new species and one new record of the Hitobia are described from Gaoligong Mountains, Yunnan Province, China: Hitobiatengchong sp. n. (male), Hitobiahirtella sp. n. (male) and Hitobiamakotoi Kamura, 2011. Distributional data and illustrations of body and copulatory organs are provided. The differences between the new species and their related species are discussed.