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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]

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]

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]