The spider family Leptonetidae Simon, 1890 includes 20 genera and 366 species from North America, the Mediterranean Region Asia. Currently, 132 belonging to six have been recorded in China. A new genus of leptonetid spiders, Yueleptoneta dongxing gen. et sp. n., is described Guangdong Province, n. distinct other chelicerae having stridulatory file on lateral margin male palp a tarsal spur, lacking strong spines or apophyses femur tibia.

Orchestina zhiwui Liu, Xu & Henrard, 2019, a species previously known only from males collected in Jiangxi Province, was found Liaoning, ca 2200 km northeast of the type locality, including specimens both sexes. The unknown female this is described, and male redescribed. A key to genus China provided.

Eight species of the genus Ischnothyreus Simon, 1893 from Xishuangbanna, Yunnan, China are recognized, including six new species: I. cristiformis Tong & Li, sp. nov. (♂♀), mangun mengyang peltifer (Simon, 1892), qidaoban qiuxing 2020 sijiae (♀) and xiaolongha (♂♀). The male is described for first time. Photos habitus copulatory organs provided.

Two new species of the genus Trilacuna Tong & Li, 2007, T. difeng sp. nov. (male, female) and wenfeng are described from Chongqing, China. A key to all this China is provided.

The genus Ischnothyreus Simon, 1893 is one of the most speciose genera Oonopidae, with 114 extant species mainly distributed in Old World. Currently, 16 have been recorded China. Two from China are recognised, including new species, I. yunlong Tong & Li, sp. n. (male, female) Yunnan. yueluensis Yin Wang, 1984 re-studied. Descriptions, diagnoses and photos two provided.

Two new species of the genus Trilacuna Tong & Li, 2007, T. jinyun Tong, Zhang sp. nov. (♂♀) and jiuchi Li (♂♀), are described from Chongqing, China. Photos habitus copulatory organs provided.

Ablemma Roewer, 1963 is a species-rich genus of the family Tetrablemmidae O. Pickard-Cambridge, 1873, currently comprising 28 known species. This mainly distributed in Southeast Asia. Currently, only one species, A.prominens Tong & Li, 2008 to occur China.The species Ablemmashimojanai (Komatsu, 1968), presently from Ryuku Islands Japan, reported China for first time on basis material collected Guangdong Province. A morphological description and detailed images are provided.

Camptoscaphiella Caporiacco, 1934 is a small genus of oonopid spiders that currently contains 20 species, which five have been recorded in Yunnan, China.Three new species Camptoscaphiella, C.hudie Tong & Yang, sp. nov. (female), C.yinglefeng (female, male) and C.yujufeng (male) are described from China. Descriptions, diagnoses photographs provided.

Four species of the genus Trilacuna Tong & Li, 2007 from Xizang, China are recognized, including three new and one newly recorded species: T.bangla Grismado Ramírez, 2014, T.mainling sp. nov. (♂♀), T.metok (♂♀) T.zayu (♂♀). Descriptions, diagnoses photomicroscopy images provided.

Five new species and three known of the genus Orchestina Simon, 1882 are recorded from Xishuangbanna, Yunnan Province: O. clavulata Tong & Li, 2011 (♂), colubrina Liu, Henrard Xu, 2019 (♂♀), concava sp. nov. menglun subclavulata truncatula wengnan (♂) xui (♂♀). The males is described for first time. An identification key to Xishuangbanna provided.

Four species of the genus Ischnothyreus Simon, 1893 from Tibet, China are recognised, including three new species, I.caoqiisp. nov. (female), I.metoksp. and I.pomesp. (male female). Males Ischnothyreuslinzhiensis Hu, 2001 discovered for first time since its description. Descriptions, diagnoses, photographs four provided.

Cuspidevia Jäch & Boukal, 1995 is a member of the tribe Macronychini which has following features: antennae short, 6-10 segmented, aedeagus long and cylindrical, paramere very small, slender or lacking. This genus currently comprises only three species. All species are distributed in China. pilosus sp. nov. reported from Guangdong, Guangxi Jiangxi Provinces Habitus diagnostic features new illustrated.

A new species of the genus

Four new species of the genus

Six new species of the genus Orchestina are described: O. aureola sp. nov., clavulata truncatula tubulata yinggezui nov. and zhengi All were collected on Hainan Island (China) by canopy fogging.

The oonopid spiders of Taiwan are surveyed. Seven genera and 13 species recognized, including 3 new species: Ischnothyreus kentingensis sp. n., Xyphinus hwangi n. Xestaspis shoushanensis newly recorded from this region: Brignolia parumpunctata (Simon, 1893), Opopaea apicalis cornuta Yin & Wang, 1984, deserticola Simon, 1891, Orchestina sinensis Xu, 1987, Pseudotriaeris karschi (Bösenberg Strand, 1906) loricata (L. Koch, 1873).

A new genus, Bannana, is established for two species that resemble those of the Dysderoides complex. Two are described, Bannanacrassispina sp. n. and Bannanaparvula Morphological descriptions illustrations both given.

Three new species of the genus Trilacuna Tong & Li, 2007, T. cangshan Tong, Yang Zhang, sp. nov. (♂), wumanshan and xiaoheishan (♂♀) are described from Yunnan, China. Descriptions, diagnoses, photographs provided.

Seven species of Opopaea are recognized from Hainan Island, China. Four found to be new science: diaoluoshan sp. nov. (male/female), furcula sanya (male) and vitrispina (male/female). One species, sauteri Brignoli, 1974 is firstly recorded this area. All them, including the two previously known cornuta Yin & Wang, 1984 gibbifera Tong Li, 2008, diagnosed illustrated. A key all seven Island provided.

Seven species of the genus Opopaea Simon, 1891 from Xishuangbanna Rainforest, Yunnan, China are recognized, including six new species: auriforma sp. nov. (male, female), cornuta Yin & Wang, 1984, flabellata (female), macula rigidula semilunata and zhengi female). Morphological descriptions illustrations all given. All types deposited in Institute Zoology, Chinese Academy Sciences Beijing (IZCAS).