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Five species of Unionicola Haldeman, 1842 (Acari: Hydrachnidia: Unionicolidae) were collected between 2018 and 2019. Notably, Unionicola (Armatax) armata Walter, 1929, previously unrecorded in China, is now documented for the first time in the country. Additionally, Unionicola newsumi Wiles, 1999 has been reclassified and assigned to the new subgenus Vespicola within the genus Unionicola Haldeman, 1842. These findings also led to the establishment of three new subgenera: Micronodusgen. nov., Vespicolagen. nov., and Lingshuiataxgen. nov. including four species: Unionicola soluplatussp. nov. U. jinisp. nov. U. caudipessp. nov. and U. armatallasp. nov. This marks the first description and documentation of these subgenera and species. [ABSTRACT FROM AUTHOR]

A brief introduction of Chinese Hygrobatidae taxonomy is reviewed. A new species, Sinibates xinyaoae Li, Smit & Guo sp. nov. from Hainan province is described representing a new genus Sinibates Li, Smit & Guo gen. nov. A second species, Hygrobates (Minibates) cf. dobriyali Pešić & Smit, 2019, from Hunan province represents a new subgenus, Minibates Li, Smit & Guo subgen. nov. in Hygrobates. The other new species, Mixobates neoamurensis Li & Guo sp. nov. from Inner Mongolia Autonomous Region adds a newly recorded genus, Mixobates Thor, 1905 from China.Text: LSIDhttps://www.zoobank.org/urn:lsid:zoobank.org:pub:3EF1A166-30A4-4761-A133-E00F40B68007Genus: Sinibates Li, Smit & Guo gen. nov.: LSID https://www.zoobank.org/urn:lsid:zoobank.org:act:D4F94642-D47C-4200-B36B-C695A54166B4Species: Sinibates xinyaoae Li, Smit & Guo sp. nov.: LSID https://www.zoobank.org/urn:lsid:zoobank.org:act:23C6986A-128D-4906-9027-926891B2C138Subgenus: Minibates Li, Smit & Guo subgen. nov.: LSID https://www.zoobank.org/urn:lsid:zoobank.org:act:142B5C42-140C-4E6A-B38E-180F8C442B1BSpecies: Mixobates neoamurensis Li & Guo sp. nov.: LSID https://www.zoobank.org/urn:lsid:zoobank.org:act:9B494E8C-81F7-4859-8DC3-88392DCDB67A [ABSTRACT FROM AUTHOR]

The present paper deals with two new species, Atractides (Atractides) bitergumus Zhang & Guo sp. nov. and Atractides (Tympanomegapus) tergumus Zhang & Guo sp. nov., and a new record of a species, Atractides (Atractides) incertus, from Hainan Province, P. R. China. These species are described and illustrated in detail. Article: Atractides (Atractides) bitergumus: Atractides (Tympanomegapus) tergumus: [ABSTRACT FROM AUTHOR]

The genus Dyneogamasus is transferred to the subfamily Pergamasinae, and the generic diagnosis is revised. A new mite species, Dyneogamasus serratus Yao & Jin sp. nov., is described and illustrated based on females from Fujian province, China. A key to the known species of the genus is given. [ABSTRACT FROM AUTHOR]