Two new species of the genus Zaitzevia Champion (Coleoptera: Elmidae) from Guangdong Province, China.

Two new species of Zaitzevia Champion, 1923, Zaitzevia acuta sp. nov. and Zaitzevia nanlingensis sp.

Two new oonopid spiders (Arachnida, Araneae) from Xishuangbanna tropical rainforest, Yunnan, China.

A new species of the genus Tong & Li, 2015 and a new species of the genus Tong & Li, 2007 are recorded from Xishuangbanna, Yunnan Province: Tong & Li, (♂♀) and Tong & Li, (♂♀). An identification key to species of the genus from Xishuangbanna is provided. Detailed diagnoses, descriptions, and photomicroscopy images of new species are provided.

Two new species and one new record of Simon, 1893 (Araneae, Oonopidae) from China.

Background: Simon, 1893 is a large genus of oonopid spiders that currently contains 126 species, amongst which, 28 have been recorded in China.

New Information: Two new species, Tong & Zhang, . and Tong & Zhang, .

A new species of Jäch & Boukal, 1995 (Coleoptera, Elmidae) from south China.

Background: Jäch & Boukal, 1995 is a member of the tribe Macronychini which has the 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.

Two new species of Simon, 1882 (Araneae, Oonopidae) from Cangshan Mountain, Yunnan, China.

Two new species of , Tong & Yang, (♂♀) and Tong & Yang, (♂) are described from Yunnan, China. Descriptions, diagnoses and photographs of habitus and copulatory organs are provided.

Heterlimnius luyashanensis sp. n. and Zaitzevia triangularis sp. n. from Shanxi Province, China (Coleoptera: Elmidae).

Two new species, Heterlimnius luyashanensis sp. n. and Zaitzevia triangularis sp.

Two new oonopid spider species from Yunnan, China (Araneae, Oonopidae).

The genera Tong & Li, 2018 and Tong & Li, 2020 are recorded from China for the first time. Two new species, (♂♀) and (♂♀) are described. Descriptions, diagnoses, photographs and keys to and species are provided.

Three new species of Caporiacco, 1934 (Araneae, Oonopidae) from Yunnan Province, China.

Background: Caporiacco, 1934 is a small genus of oonopid spiders that currently contains 20 species, of which five have been recorded in Yunnan, China.

New Information: Three new species of , Tong & Yang, (female), Tong & Yang, (female, male) and Tong & Yang, (male) are described from Yunnan, China. Descriptions, diagnoses and photographs are provided.

Three new species of the genus Tong & Li, 2007 (Araneae, Oonopidae) from Yunnan Province, China.

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

A new species of Simon, 1893 (Araneae, Oonopidae) from Guangdong Province, China.

Background: Simon, 1893 is one of the most speciose genera of Oonopidae, with 124 extant species mainly distributed in the Old World. Currently, 27 species are known in China.

New Information: A new species, Tong, sp.

Three new species of the genus Simon, 1893 and the discovery of the male of Hu, 2001 from Tibet, China (Araneae, Oonopidae).

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

Three new species of the genus Zaitzevia Champion, 1923 from China (Coleoptera: Elmidae: Macronychini).

Three new species of the genus Zaitzevia Champion, 1923: Zaitzevia muchenae sp. nov., Zaitzevia reniformis sp.

Descriptions of eight new species of Grouvellinus from China (Coleoptera, Elmidae).

Eight new species are described from Yunnan, China (Grouvellinus elongatus sp. nov., G.

Two new species of the spider genus Sinamma Lin amp; Li, 2014 (Araneae, Tetrablemmidae) from Guangdong Province, China.

Two new species of the genus Sinamma Lin Li, 2014, Sinamma quadrata Tong Li, sp. nov. (male, female) and Sinamma yingae Tong Li, sp.

A new genus and species of leptonetid spiders (Araneae, Leptonetidae) from Guangdong Province, China.

Background: The spider family Leptonetidae Simon, 1890 includes 20 genera and 366 species from North America, the Mediterranean Region and Asia. Currently, 132 species belonging to six genera have been recorded in China.

New Information: A new genus and species of leptonetid spiders, gen.

A new species of the genus Urumaelmis Sat, and the first record of the genus from China (Coleoptera: Elmidae).

The genus Urumaelmis Sat, 1963 is recorded for the first time from China. A new species, Urumaelmis yunnanensis sp. nov.

A new genus and two new species of oonopid spiders from Tibet, China (Araneae, Oonopidae).

A new genus, Tong & Li, , including two new species, Tong & Li, (♂♀) and Tong & Li, (♂♀), is described from Tibet, China. Morphological descriptions and photographic illustrations of the two new species are given.

Two new species of the genus from Yunnan, China (Araneae, Oonopidae).

Two new species of the genus Caporiacco, 1934 are described from Yunnan, China, i.e., Tong & Li, (♂♀) and Tong & Li, (♂♀).

One new species of the genus Simon, 1893 and re-description of Yin & Wang, 1984 from China (Araneae, Oonopidae).

Background: The genus Simon, 1893 is one of the most speciose genera of Oonopidae, with 114 extant species mainly distributed in the Old World. Currently, 16 species have been recorded in China.

New Information: Two species of the genus Simon, 1893 from China are recognised, including one new species, Tong & Li, sp.

Taxonomic study of the genus (Araneae, Oonopidae) from Xishuangbanna Rainforest, southwestern China.

Eight species of the genus Simon, 1893 from Xishuangbanna, Yunnan, China are recognized, including six new species: Tong & Li, (♂♀), Tong & Li, (♂♀), Tong & Li, (♂♀), (Simon, 1892), Tong & Li, (♂♀), Tong & Li, 2020 (♂♀), Tong & Li, (♀) and Tong & Li, (♂♀). The male of Tong & Li, 2020 is described for the first time. Photos of the habitus and copulatory organs are provided.

Three new species and two new records of emHelochares/em (Hydrobaticus) MacLeay, 1871 from China (Coleoptera: Hydrophilidae: Acidocerinae).

Helochares (Hydrobaticus) MacLeay, 1871 is the largest subgenus of Helochares Mulsant, 1844. The Chinese fauna of Helochares (Hydrobaticus) is still poorly known. Five species are recognized, including three herein described as new: Helochares (Hydrobaticus) hainanensis sp.

Two new species of the genus Trilacuna from Chongqing Municipality, China (Araneae, Oonopidae).

Two new species of the genus Trilacuna Tong Li, 2007, T. difeng Tong Li, sp. nov.

Taxonomic study of the genus Simon, 1893 from Myanmar (Araneae, Oonopidae).

Seven new species of the genus Simon, 1893 from the spider family Oonopidae Simon, 1890 are reported from Myanmar: (♀), (♀), (♂♀), (♀), (♀), (♂♀) and (♂♀). Morphological descriptions and photographic illustrations of the new species are given. All types are preserved in the Institute of Zoology, Chinese Academy of Sciences (IZCAS).

Taxonomic studies on the genus (Araneae, Oonopidae) from Myanmar.

Six species of the genus Tong & Li, 2007 are reported from Myanmar, including four new species: Grismado & Piacentini, 2014 (♂♀), Tong & Li, (♂♀), Tong & Li, (♂♀), Grismado & Piacentini, 2014 (♀), Tong & Li, (♂), and Tong & Li, (♀). Morphological descriptions and photographic illustrations of the new species are given. All types are preserved in the Institute of Zoology, Chinese Academy of Sciences in Beijing (IZCAS).

A new species of the genus Graphelmis DELÈVE, 1968 from China (Coleoptera: Elmidae).

Graphelmis dulongensis sp. nov. is described from Yunnan, China.