taxonID	type	description	language	source
03AC310DBB6ABF07FE1AFD0BFC9D6334.taxon	description	(Figure 1 A-D)	en	K, Harry Smit, K, Vladimir Pešić, K, Mer Man Gurung (2022): The water mite genus Sperchon Kramer, 1877 in Bhutan (Acari: Hydrachnidia: Sperchontidae), with the description of three new species. Acarologia 62 (3): 754-762
03AC310DBB6ABF07FE1AFD0BFC9D6334.taxon	materials_examined	Material examined — Holotype female, Royal Botanical Park, Lampelri, 27.50750 ° N, 89.75269 ° E, 2667 m a. s. l., 10 Aug. 2016, leg. W. Klein (NBC).	en	K, Harry Smit, K, Vladimir Pešić, K, Mer Man Gurung (2022): The water mite genus Sperchon Kramer, 1877 in Bhutan (Acari: Hydrachnidia: Sperchontidae), with the description of three new species. Acarologia 62 (3): 754-762
03AC310DBB6ABF07FE1AFD0BFC9D6334.taxon	diagnosis	Diagnosis — Large size (> 1250), integument with longish papillae ; dorsum and venter without glandularia-free platelets ; P 2 with an anteroventral extension with a large seta, P 4 slender, ventrally with two very small setae.	en	K, Harry Smit, K, Vladimir Pešić, K, Mer Man Gurung (2022): The water mite genus Sperchon Kramer, 1877 in Bhutan (Acari: Hydrachnidia: Sperchontidae), with the description of three new species. Acarologia 62 (3): 754-762
03AC310DBB6ABF07FE1AFD0BFC9D6334.taxon	description	Description — Female: Idiosoma dorsally 1296 long and 1199 wide, ventrally 1332 long. Integument with longish papillae. Dorsal and ventral glandularia platelets indistinct, no glandularia-free platelets present (Figure 1 A). Gnathosoma 275 long, rostrum much shorter than basal part. Cx-I separated medially, Cx-III with a glandularium (Figure 1 B). Genital flaps 267 long, pregenital sclerite lying under flaps and first pair of acetabula. Excretory pore sclerotized. Length of P 1 - 5: 56, 184, 251, 352, 62. P 2 with an anteroventral extension with a large seta, P 4 slender, ventrally with two small setae (Figure 1 C). Length of I-leg- 4 - 6: 300, 316, 275. Length of IV-leg- 4 - 6: 510, 454, 373. All fourth and fifth segments of the legs dorsally with a row of pectinate setae (Figure 1 D). Leg claws with one clawlet and a small claw blade. Male: Unknown.	en	K, Harry Smit, K, Vladimir Pešić, K, Mer Man Gurung (2022): The water mite genus Sperchon Kramer, 1877 in Bhutan (Acari: Hydrachnidia: Sperchontidae), with the description of three new species. Acarologia 62 (3): 754-762
03AC310DBB6ABF07FE1AFD0BFC9D6334.taxon	etymology	Etymology — Named for its large size.	en	K, Harry Smit, K, Vladimir Pešić, K, Mer Man Gurung (2022): The water mite genus Sperchon Kramer, 1877 in Bhutan (Acari: Hydrachnidia: Sperchontidae), with the description of three new species. Acarologia 62 (3): 754-762
03AC310DBB6ABF07FE1AFD0BFC9D6334.taxon	discussion	Discussion — It’s large size, the absence of glandularia-free platelets, the very long and slender P 4 and the longish papillae will distinguish the new species from all other Sperchon species. Sperchon glandulosus Koenike, 1886 and S. thienemanni Koenike, 1907 are both large species, but both differ in P 4 with stout ventral setae. Moreover, the excretory pore of S. thienemanni is unsclerotized.	en	K, Harry Smit, K, Vladimir Pešić, K, Mer Man Gurung (2022): The water mite genus Sperchon Kramer, 1877 in Bhutan (Acari: Hydrachnidia: Sperchontidae), with the description of three new species. Acarologia 62 (3): 754-762
03AC310DBB6ABF00FE1AF9F6FC0566CF.taxon	description	(Figure 2 A-H)	en	K, Harry Smit, K, Vladimir Pešić, K, Mer Man Gurung (2022): The water mite genus Sperchon Kramer, 1877 in Bhutan (Acari: Hydrachnidia: Sperchontidae), with the description of three new species. Acarologia 62 (3): 754-762
03AC310DBB6ABF00FE1AF9F6FC0566CF.taxon	materials_examined	Material examined — Holotype male, Khabab Chhu, Bhutan, 27.48492 ° N, 90.33490 ° E, 2500 m a. s. l., 14 May 2021, leg. M. M. Gurung (NBC). Paratypes: seven males, five females, same data as holotype (NBC) ; five males, two females, same location as holotype, 7 Nov. 2021 (NBC) ; one male, Nika Chhu, Bhutan, 27.526008 ° N, 90.299471 ° E, 2609 m a. s. l., 10 May 2021, leg. M. M. Gurung (NBC) ; two males, Chendebji Chhu, 27.47692 ° N, 90.35265 ° E, 2483 m a. s. l., 8 Nov. 2021, leg. M. M. Gurung (NBC). Other material – 4 / 5 / 0, Chuserbu Chhu, 27.502465 ° N, 90.317826 ° E, 2666 m a. s. l., 13 May 2021 ; 0 / 1 / 0, Chumpigang Chhu, 27.31608 ° N, 90.58071 ° E, 1018 m a. s. l., 2 Nov. 2021 ; 3 / 0 / 0, Rukhubju Chhu, 27.51174 ° N, 90.29711 ° E, 2587 m a. s. l., 5 Nov. 2021 ; 1 / 1 / 0, Chuserbu Chhu, 27.50246 ° N, 90.31782 ° E, 2666 m a. s. l., 6 Nov. 2021	en	K, Harry Smit, K, Vladimir Pešić, K, Mer Man Gurung (2022): The water mite genus Sperchon Kramer, 1877 in Bhutan (Acari: Hydrachnidia: Sperchontidae), with the description of three new species. Acarologia 62 (3): 754-762
03AC310DBB6ABF00FE1AF9F6FC0566CF.taxon	diagnosis	Diagnosis — Dorsal platelets relatively large (length up to 160), with an unpaired central platelet (diameter 140) ; P 2 with a large anteroventral extension with a stout seta, P 4 ventrally with two stout setae lying relatively close to each other.	en	K, Harry Smit, K, Vladimir Pešić, K, Mer Man Gurung (2022): The water mite genus Sperchon Kramer, 1877 in Bhutan (Acari: Hydrachnidia: Sperchontidae), with the description of three new species. Acarologia 62 (3): 754-762
03AC310DBB6ABF00FE1AF9F6FC0566CF.taxon	description	Description — Male: Integument papillate. Idiosoma dorsally 753 (570 - 778) long and 720 (583 - 729) wide, ventrally 818 (632 - 842) long. Dorsum with relatively large glandularia (length up to 160), reddish platelets (but yellowish to yellowish-brown in young specimens and in a few mature specimens) and three pairs of platelets without glandularia ; preocularia on a small platelet, postocularia on a relatively large platelet ; centrally with a large unpaired platelet, diameter 140 (Figure 2 A). Occasionally Dgl- 3 fused with lateral platelet without glandularia (Figure 2 C). Gnathosoma stocky, 158 long. Venter with relatively large platelets. Cx-I medially separated (Figure 2 B), Cx-III witht a glandularium. Genital field with three pairs of acetabula, middle acetabula elongated ; genital flap 194 long, medial margin with a row of setae (Figure 2 F). Excretory pore sclerotized. Length of P 1 - 5: 28, 90, 109, 152, 35. P 2 with an anteroventral extension and a stout seta, P 4 ventrally with two stout, blunt setae (Figure 2 D-E). Length of I-leg- 4 - 6: 160, 180, 164. Length of IV-leg- 4 - 6: 259, 251, 227. II-IV-leg with pectinate setae (Figure 2 H). Leg claws with three clawlets, the most ventral one blunt. Female: Idiosoma dorsally 940 (612 - 846) long and 899 (632 - 818) wide, ventrally 980 (697 - 899) long. In most aspects similar to male. Central unpaired dorsal platelet smaller compared to male. Genital flap 203 long (Figure 2 G). Length of P 1 - 5: 36, 130, 150, 208, 49. Palp as in male. Length of I-leg- 4 - 6: 190, 212, 180. Length of IV-leg- 4 - 6: 308, 283, 267. Legs as in male.	en	K, Harry Smit, K, Vladimir Pešić, K, Mer Man Gurung (2022): The water mite genus Sperchon Kramer, 1877 in Bhutan (Acari: Hydrachnidia: Sperchontidae), with the description of three new species. Acarologia 62 (3): 754-762
03AC310DBB6ABF00FE1AF9F6FC0566CF.taxon	etymology	Etymology — Named for the red-coloured platelets.	en	K, Harry Smit, K, Vladimir Pešić, K, Mer Man Gurung (2022): The water mite genus Sperchon Kramer, 1877 in Bhutan (Acari: Hydrachnidia: Sperchontidae), with the description of three new species. Acarologia 62 (3): 754-762
03AC310DBB6ABF00FE1AF9F6FC0566CF.taxon	discussion	Discussion — Sperchon gracilipalpis Lundblad, 1941 has more or less similar configuration of the dorsal platelets, but these platelets are much smaller compared to the new species. Moreover, the palp of S. gracilipalpis has P 4 ventrally with only small setae, which are more separated from each other compared to the new species, and the integument is reticulated. Sperchon noshaqensis Imamura, 1966 has a more or less similar palp, but P 3 is slenderer. Unfortunately, Imamura (1966) didn′t describe the dorsum of S. noshaqensis, but according to Pešić & Smit (2020) the dorsum is without sclerotized muscle attachment plates (although their assignment of their specimens is uncertain).	en	K, Harry Smit, K, Vladimir Pešić, K, Mer Man Gurung (2022): The water mite genus Sperchon Kramer, 1877 in Bhutan (Acari: Hydrachnidia: Sperchontidae), with the description of three new species. Acarologia 62 (3): 754-762
03AC310DBB6DBF00FE1AFB98FC3362A6.taxon	description	(Figure 3 A-D)	en	K, Harry Smit, K, Vladimir Pešić, K, Mer Man Gurung (2022): The water mite genus Sperchon Kramer, 1877 in Bhutan (Acari: Hydrachnidia: Sperchontidae), with the description of three new species. Acarologia 62 (3): 754-762
03AC310DBB6DBF00FE1AFB98FC3362A6.taxon	materials_examined	Material examined — Holotype male, Chumpigang Chhu, Bhutan, 27.31608 ° N, 90.58071 ° E, 1018 m a. s. l., 8 May 2021 (NBC).	en	K, Harry Smit, K, Vladimir Pešić, K, Mer Man Gurung (2022): The water mite genus Sperchon Kramer, 1877 in Bhutan (Acari: Hydrachnidia: Sperchontidae), with the description of three new species. Acarologia 62 (3): 754-762
03AC310DBB6DBF00FE1AFB98FC3362A6.taxon	diagnosis	Diagnosis — Dorsal platelets large, especially postocularia platelets and Dc- 5, the latter fused with Dgl- 5 ; small ventral setae of P 4 relatively close to each other.	en	K, Harry Smit, K, Vladimir Pešić, K, Mer Man Gurung (2022): The water mite genus Sperchon Kramer, 1877 in Bhutan (Acari: Hydrachnidia: Sperchontidae), with the description of three new species. Acarologia 62 (3): 754-762
03AC310DBB6DBF00FE1AFB98FC3362A6.taxon	description	Description — Male: Idiosoma dorsally 705 long and 616 wide, ventrally 753 long. Integument reticulate. Dorsal platelets large, postocularia platelets and Dc- 5 are the largest platelets (Figure 3 A). All dorsal platelets paired except one platelet posterior to postocularia platelets. Gnathosoma 220 long, rostrum shorter than basal part. Cx-I separated medially, Cx-III with a glandularium (Figure 3 B). Excretory pore sclerotized, lateral to excretory pore a pair of large platelets. Length of P 1 - 5: 34, 110, 156, 208, 41. P 2 with a large anteroventral extension with one long and one shorter seta ; P 3 ventrally somewhat bulging ; ventral margin of P 4 with two small setae (Figure 3 C). Length of I-leg- 4 - 6: 188, 166, 154. Length of IV-leg- 4 - 6: 288, 275, 259. Legs-II-IV with pectinate setae (Figure 3 D). Leg claws with one clawlet and without claw blade. Female: Unknown.	en	K, Harry Smit, K, Vladimir Pešić, K, Mer Man Gurung (2022): The water mite genus Sperchon Kramer, 1877 in Bhutan (Acari: Hydrachnidia: Sperchontidae), with the description of three new species. Acarologia 62 (3): 754-762
03AC310DBB6DBF00FE1AFB98FC3362A6.taxon	etymology	Etymology — Named after the country where the new species has been collected.	en	K, Harry Smit, K, Vladimir Pešić, K, Mer Man Gurung (2022): The water mite genus Sperchon Kramer, 1877 in Bhutan (Acari: Hydrachnidia: Sperchontidae), with the description of three new species. Acarologia 62 (3): 754-762
03AC310DBB6DBF00FE1AFB98FC3362A6.taxon	discussion	Discussion — The new species is most similar to S. gracilipalpis Lundblad, 1941, but differs in the following characters (those of S. gracilipalpis in parenthesis): dorsum with large platelets (smaller platelets), the ventral setae of P 4 are lying close to each (more separated), ventral margin of P 3 is convex (straight), P 4 208 long (shorter, 136 long) and the gnathosoma is large, 220 long (smaller, 143 long).	en	K, Harry Smit, K, Vladimir Pešić, K, Mer Man Gurung (2022): The water mite genus Sperchon Kramer, 1877 in Bhutan (Acari: Hydrachnidia: Sperchontidae), with the description of three new species. Acarologia 62 (3): 754-762
03AC310DBB6EBF02FE1AF9B4FBD163B0.taxon	description	(Figure 4 A-B)	en	K, Harry Smit, K, Vladimir Pešić, K, Mer Man Gurung (2022): The water mite genus Sperchon Kramer, 1877 in Bhutan (Acari: Hydrachnidia: Sperchontidae), with the description of three new species. Acarologia 62 (3): 754-762
03AC310DBB6EBF02FE1AF9B4FBD163B0.taxon	materials_examined	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.	en	K, Harry Smit, K, Vladimir Pešić, K, Mer Man Gurung (2022): The water mite genus Sperchon Kramer, 1877 in Bhutan (Acari: Hydrachnidia: Sperchontidae), with the description of three new species. Acarologia 62 (3): 754-762
03AC310DBB6EBF02FE1AF9B4FBD163B0.taxon	description	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 4 A). Gnathosoma stocky, 196 long, rostrum shorter than basal part. Cx-I separated medially, Cx-III with a glandularium. Genital flaps 128 long. Length of P 1 - 5: 34, 119, 146, 128, 32. P 2 with an anteroventral extension with a long and short fine setae, ventral margin of P 4 with one small, stout setae, one very small stout seta more anteriorly and distanced from ventral margin (Figure 4 B) ; P 4 shorter than P 3, ventrally with one stout seta, more anteriorly and distanced from ventral margin a smaller stout seta. Excretory pore sclerotized. Male: See Pešić et al. (2019 a).	en	K, Harry Smit, K, Vladimir Pešić, K, Mer Man Gurung (2022): The water mite genus Sperchon Kramer, 1877 in Bhutan (Acari: Hydrachnidia: Sperchontidae), with the description of three new species. Acarologia 62 (3): 754-762
03AC310DBB6EBF02FE1AF9B4FBD163B0.taxon	discussion	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 P 4 (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).	en	K, Harry Smit, K, Vladimir Pešić, K, Mer Man Gurung (2022): The water mite genus Sperchon Kramer, 1877 in Bhutan (Acari: Hydrachnidia: Sperchontidae), with the description of three new species. Acarologia 62 (3): 754-762
03AC310DBB6EBF02FE1AF9B4FBD163B0.taxon	distribution	Distribution — Uttarakhand State, India (Kumar et al. 2007 ; Pešić et al. 2019 b) ; Hubei Province, China (Zhang and Jin 2010) ; Bhutan (this study).	en	K, Harry Smit, K, Vladimir Pešić, K, Mer Man Gurung (2022): The water mite genus Sperchon Kramer, 1877 in Bhutan (Acari: Hydrachnidia: Sperchontidae), with the description of three new species. Acarologia 62 (3): 754-762
03AC310DBB6FBF02FE1AF972FB24621B.taxon	description	(Figure 5 A-B) Sperchon indicus Kumar, Kumar and Pesic, 2007 – new syn.	en	K, Harry Smit, K, Vladimir Pešić, K, Mer Man Gurung (2022): The water mite genus Sperchon Kramer, 1877 in Bhutan (Acari: Hydrachnidia: Sperchontidae), with the description of three new species. Acarologia 62 (3): 754-762
03AC310DBB61BF0CFE1AFED6FB0A649D.taxon	materials_examined	Material examined — 01 / 0, Royal Botanical Park, Lampelri, 27.50750 ° N, 89.75269 ° E, 2667 m a. s. l., 10 Aug. 2016, leg. W. Klein. Distribution — Burma (Lundblad 1967) ; Bhutan (this study).	en	K, Harry Smit, K, Vladimir Pešić, K, Mer Man Gurung (2022): The water mite genus Sperchon Kramer, 1877 in Bhutan (Acari: Hydrachnidia: Sperchontidae), with the description of three new species. Acarologia 62 (3): 754-762
