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Reductholaspis Emberson is rediagnosed with the description of a new species, Reductholaspis longicorniculussp. nov. Shen & Yi from southwestern China. This is the first report of the genus Reductholaspis from the Oriental Region and the first described male for the genus. Reductholaspis longicorniculussp. nov. is distinguished from R. analis Hyatt & Emberson by the dorsal shield with 28 pairs of setae, posterior margin of the sternal shield with deep hollows lateral to iv2, latigynal sclerites well developed, metasternal plates ovate, all setae on coxae I–IV pilose, tarsus I with proximal pilose setae, and three pairs of lightly sclerotized platelets between the epigynal shield and anal shield. [ABSTRACT FROM AUTHOR]

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]

A new species, Momonides neolandbergi Li & Guo sp. nov. is described in detail, which is the fifth species all over the world in Momonidinae Lundblad, 1941, Momoniidae K. Viets, 1926. The family and subfamily are newly recorded for Chinese fauna. The new species are recorded by camera, optical microscope, and scanning electron microscope. Publication:New species: [ABSTRACT FROM AUTHOR]

Abrolophus diaoluoensis Xu & Jin sp. nov. with a comb-like seta and palpfemur with a distinct projection is described and illustrated based on larvae from arbours of Hainan Province, China. The genus Abrolophus is new for the fauna of Hainan Island. [ABSTRACT FROM AUTHOR]

The female and male of Parasitus quadrichaetus Ma & Cui, 1999 are described for the first time. They show that this species is correctly placed in Parasitus sensu lato and not Coprocarpais Hrúzová & Fenďa, 2018. The deutonymph is also redescribed in detail. [ABSTRACT FROM AUTHOR]

Dambullaeus hainanensis Xu & Jin sp. nov. is described and illustrated based on larvae ectoparasitic on Delphacidae (Hemiptera) from Hainan Island, China. A modified generic diagnosis of larval Dambullaeus is provided and a key to the species of larval Dambullaeus is presented. [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]

Two new water mites species of the genus Sperchon Kramer, 1877 from China, Sperchon synsetus sp. nov. and Sperchon xiaoqikongensis sp. nov. are described and illustrated in this article. Sperchon synsetus sp. nov. differs from known species of the genus in the following: cuticle covered with very fine spinules arranged in polygonal pattern and each polygon with an annular line inside; two peg-like setae fused at the base on the ventral side of P-IV. Sperchon xiaoqikongensis sp. nov. is characterized by cuticle covered with scale-shaped papillae; P-II with an obtuse projection bearing three setae and A1 setae is plumose. To the present, 18 species of the genus Sperchon have been described from China. [ABSTRACT FROM AUTHOR]

Alloeuzercon seemani Sun, Jin & Yi gen. & sp. nov. (Acari: Mesostigmata: Celaenopsoidea: Euzerconidae) associated with passalid beetles (Coleoptera: Passalidae) is described, representing the first record of the family Euzerconidae from China. The new genus bears a close resemblance to the genera Euzerconoides and Paraeuzercon, prompting us to update the key to genera. [ABSTRACT FROM AUTHOR]

The genus Arrhenoseius Walter & Lindquist, 2000 is recorded for the first time from the Oriental Realm on the basis of two new species. Arrhenoseius hallidayisp. nov. can be distinguished from other species of the genus by the ventrianal shield bearing five pairs of ventral setae and unsclerotised ventro-lateral cuticle without setae in the adult female, and Arrhenoseius granulatussp. nov. can be distinguished by the ventrianal shield bearing eight pairs of ventral setae and unsclerotised lateral cuticle with six pairs of setae. A key to species of Arrhenoseius is given based on the adult females. [ABSTRACT FROM AUTHOR]