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A new species of genus Pseudoscirus Wurlitzer & Rocha, 2021, P. menglaensis Chen & Jin sp. nov. is described, which represents a newly recorded genus Pseudoscirus to China. And a key to species (adult females) of Pseudoscirus is given in the world. [ABSTRACT FROM AUTHOR]

Diplogyniopsis fluctuosumsp. nov. associated with passalid beetles is described based on females from China on undermined passalid beetles, as well as on females and males from Thailand on Aceraius helferi (Coleoptera: Passalidae). The species represents the second known species of Diplogyniopsis Trägårdh, prompting us to redefine the genus diagnosis. [ABSTRACT FROM AUTHOR]

A known species, Scirula papilataLin, 1997 based on samples collected from Hubei Province, China, is redescribed with the detailed illustration and the first description of males. [ABSTRACT FROM AUTHOR]

The erythraeid species can be assigned with larva or adult only, or both under current Erythraeidae taxonomy. The present study describes two new erythraeid species from Yunnan-Guizhou Plateau (Oriental region). Marantelophus neodubifurcatussp. nov. is based on larvae that were off-host when collected, while Erythraeus (Zaracarus) mossesussp. nov. is based on a female adult, which was preying on an ant when collected, and larvae which were her offspring. The genus Marantelophus is divided into two species groups based on the odontus with or without a subterminal tooth, and M. neodubifurcatussp. nov. belongs to the group with the subterminal tooth. The larval members of the subgenus Erythraeus (Zaracarus) are divided into five species groups, and E. (Z.) mossesussp. nov. belongs to the group with the characters such that AL without swelling near bases, and fn BFe = 2-2-2. [ABSTRACT FROM AUTHOR]

Two new species of genus Cunaxa, namely, C. papilla Chen & Jin sp. nov. and C. striata Chen & Jin sp. nov. are described and illustrated. C. papilla Chen & Jin sp. nov. was collected in Ruyuan Yao Autonomous County, Shaoguan City, Guangdong province, China. It's similar to C. magoebaensis Den Heyer, 1979, but differs from it by the long finger-like apophysis on the palp telofemur, propodosomal shield with fine papillae and c1, c2, d1, e1, f1 and h1 situated on small platelets. C. striata Chen & Jin sp. nov. was collected in Qingchuan County, Sichuan province and Zhaoqing City, Guangdong province, China. It's similar to C. yaylensisSergeyenko, 2009, but differs from it by the propodosomal shield with broken striae, c1 longer than or equal to f1 and h1 in length, f1 extending beyond the base of h1 and two pairs of hysterogastral setae (hgs1–hgs2). A key to adult females of Cunaxa species of the China is provided. [ABSTRACT FROM AUTHOR]

This paper deals with a new species of genus Parabonzia and newly recorded genus Bonzia from China. Parabonzia bioxys Chen & Jin sp. nov., which is described and illustrated based on adult females collected from rotten wood in Hainan Province, China, differs from all other Parabonzia by the dorsal seta of the palp telofemur having two tines instead of three or more (most species) or being unbranched (P. mindanensisCorpuz-Raros, 1996). Bonzia halacaroidesOudemans, 1927 is redescribed based on adult females collected from fallen leaves in Jiangxi Province and Chongqing City, China, which represents a newly recorded genus BonziaOudemans, 1927 to China and adds more details and new illustrations to its original description. [ABSTRACT FROM AUTHOR]

This paper reports two new species of genus Neoscirula, namely, N. bambus Chen & Jin sp. nov. from Guangxi Zhuang Autonomous Region and N. pananensis Chen & Jin sp. nov. from Zhejiang province, which are described and illustrated. A key to adult females of Neoscirula species of the China is provided. [ABSTRACT FROM AUTHOR]

This paper further enriches the taxonomic study of Feltriidae Viets, 1926 in China since it was first reported by Yi & Jin in 2011. Seven species, Feltria hanmaensis sp. nov., Feltria pesici sp. nov., Feltria pseudoparva sp. nov., Feltria expendis sp. nov., Feltria yinjiangensis sp. nov., Feltria neoflatheadensis sp. nov. and Feltria glandulosa sp. nov., are described as new to science; Feltria minuta Koenike, 1892 is new to the Chinese water mite fauna. In addition, some slit organs of these species are photographed by SEM (scanning electron microscope) and illustrated in detail by optical microscope to provide material for exploiting valuable character in specific identification. [ABSTRACT FROM AUTHOR]

Chaetotaxy is an important character especially in mites and can be applied in species diagnosis, phylogenetics, ontogeny, and so on. Chaetotaxic ontogeny of Bdella was carried out through comparing both immature and adult descriptions of eight Bdella species, including a new species, B. xinisp. nov., from China. Based on these species, chaetotaxy changes in Bdella mainly focused on ventral hypostomal setae (vh), setae on palpal basifemur, aggenital setae (ag), genital setae (g), anal setae (ad) and leg setae. [ABSTRACT FROM AUTHOR]

Three new aturid species are described and illustrated from China: Woolastookia allobasilicalabricasp. nov., and Paraxonopsis suturasp. nov. in the Axonopsinae, and Aturus jixiensissp. nov. in the Aturinae. The genus Paraxonopsis is a newly recorded genus for the Chinese fauna. Woolastookia allobasilicalabricasp. nov. is the third species and Aturus jixiensissp. nov. is the second species in their respective genera from China. A key to the Chinese fauna of Aturidae is provided in this paper. Meanwhile, the diagnosis of Paraxonopsis is revised. [ABSTRACT FROM AUTHOR]

This paper describes three new species of genus Cunaxoides, namely, C. reticulatus Chen & Jin sp. nov., C. kanasensis Chen & Jin sp. nov. and C. allokanasensis Chen & Jin sp. nov., which are described and figured from Xinjiang Uygur Autonomous Region, China. [ABSTRACT FROM AUTHOR]

A new species, Gamasodes pachysetis Yao & Jin sp. nov., is described based on deutonymphs and adults from Jiangsu and Taiwan provinces, China. A nominal species, Gamasodes spinigerTrägårdh, 1910, new to China, is redescribed also based on deutonymph and adults from Guizhou Province. A key to Gamasodes species of China is presented. [ABSTRACT FROM AUTHOR]

The genus Lepidocunaxoides (Acariformes: Cunaxidae) is recorded for the first time from China and the generic diagnosis is revised on the basis of both sexes of a new species, Lepidocunaxoides bomiensis Chen & Jin sp. nov.. The new species differs from the known species Lepidocunaxoides robustus Kalúz & Ermilov, 2019 by follows: palpal tibiotarsus claw unbranched apically and tibiotarsus with a proximal bifurcated seta; cheliceral seta and adoral setae absent; propodosomal shield concave anteromedially; tibia II with one bsl. Cunaxoides neopectinatusShiba, 1978 is transferred to Lepidocunaxoides based on the generic concept. [ABSTRACT FROM AUTHOR]

Four new species, Caeculisoma allopenlineatus Xu & Jin sp. nov., Dambullaeus jianfengensis Xu & Jin sp. nov., Iguatonia seemani Xu & Jin sp. nov. and Iguatonia xinfengi Xu & Jin sp. nov. are described and illustrated based on larvae ectoparasitic on insects (Hemiptera) from Hainan Province, China. The genus Iguatonia is reported for the first in China. New data for Caeculisoma penlineatus Xu & Jin, 2019 are given. Keys to world species of larval Caeculisoma, Dambullaeus and Iguatonia are presented. [ABSTRACT FROM AUTHOR]

This paper deals with two species of Scutascirus. Scutascirus hechiensis Chen & Jin sp. nov. is distinguished from the close species, S. pentascutellusCorpuz-Raros & Garcia, 1996 by the follows: basifemur IV with 2 sts; telofemora III with 4 sts and IV with 3 sts; genu IV with 6 sts; tibia I with 2 bsl and III with 1 bsl; tarsus I with 3 bsl. The male of Scutascirus triangulumLin, Zhang & Ji, 2001 is described for the first time. [ABSTRACT FROM AUTHOR]

A new species of Orangescirulinae, Orangescirula lii Chen & Jin sp. nov., is described and illustrated. It is characterized by having 2 claw-like setae, no solenidion and adorsal setae on palpal tibiotarsus, having 5 pairs of hysterogastral setae, 1 bsl and 5 sts on tibia III, 1 asl and 3 bsl on tarsus I. A key to adult females of Orangescirula of the world is provided. [ABSTRACT FROM AUTHOR]

Two species of Oligonychus are redescribed: O. baipisongisMa & Yuan, 1976 and O. chamaecyparisaeMa & Yuan, 1976. Moreover, O. hainanensisMa, Yuan & Lin, 1979 is here recognized as a junior synonym of O. biharensis (Hirst, 1924), which is also redescribed here based on adult females, males and deutonymphs. The redescription of O. baipisongis is based on holotype and paratypes, the types of O. chamaecyparisae could not be located but the species is described from male and female material collected by En-Pei Ma in 1978 from Lanzhou City, Xi-An City and Xining City. The dorsal setae in O. baipisongis show remarkable sexual dimorphism. The difference between the aedeagi of O. chamaecyparisae and Oligonychus perditusPritchard & Baker, 1955 are discussed. All three species are diagnosed, illustrated with line drawings and photographs. [ABSTRACT FROM AUTHOR]