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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]

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]

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]