The water mite genus Sperchon Kramer, 1877 in Bhutan (Acari: Hydrachnidia: Sperchontidae), with the description of three new species Author K, Harry Smit Naturalis Biodiversity Center, P. O. Box 9517, 2300 RA Leiden, the Netherlands. Author K, Vladimir Pešić Author K, Mer Man Gurung text Acarologia 2022 2022-08-10 62 3 754 762 journal article 2107-7207 Sperchon ( Hispidosperchon ) garhwalensis Kumar, Kumar & Pesic, 2007 ( Figure 4 A-B) Material examined — 1/3/0, Berti Chhu, 27.16264°N , 90.66003°E , 590 m a.s.l, 26 Apr. 2021; 0/1/1, Takabi Chhu, 27.14782°N , 90.68833°E , 543 m a.s.l., 30 Apr. 2021 ; 1/12/0, Berti Chhu, 27.16264°N , 90.66003°E , 590 m a.s.l., 25 Oct. 2021 ; 2/0/3, Bipgang Chhu, 27.15720°N , 90.66721°E , 586 m a.s.l., 25 Oct. 2021 . Description — Female: Idiosoma dorsally 713 (575-680) long and 535 (437-527) wide, ventrally 753 (624-745) long. Dorsum with a pair of conspicuous large platelets near Dgl-5 ( Figure 4A ). Gnathosoma stocky, 196 long, rostrum shorter than basal part. Cx-I separated medially, Cx-III with a glandularium. Genital flaps 128 long. Length of P1-5: 34, 119, 146, 128, 32. P2 with an anteroventral extension with a long and short fine setae, ventral margin of P4 with one small, stout setae, one very small stout seta more anteriorly and distanced from ventral margin ( Figure 4B ); P4 shorter than P3, ventrally with one stout seta, more anteriorly and distanced from ventral margin a smaller stout seta. Excretory pore sclerotized. Figure 4 Sperchon ( Hispidosperchon ) garhwalensis , female. A – dorsum; B – P4-5. Scale bars: A 200 µm, B 50 µm. Male: See Pešić et al. (2019a) . Discussion — Thus far, a limited number of specimens were known of this species, and therefore a number of additional measurements are given above. The large and conspicuous Dc- 5 in combination with the setation of P4 (especially the small anterior seta distanced from the ventral margin) are diagnostic. Specimens from China have larger dorsal and ventral platelets compared to the specimens from India and Bhutan , but their configuration is similar ( Zhang and Jin 2010 ). Distribution — Uttarakhand State , India ( Kumar et al. 2007 ; Pešić et al. 2019b ); Hubei Province , China ( Zhang and Jin 2010 ); Bhutan (this study).