Water mites of the genus Atractides Koch, 1837 from Kyrgyzstan (Acari: Hydrachnidia: Hygrobatidae) with the description of six new species Author Pešić, Vladimir Department of Biology, University of Montenegro, Cetinjski put b. b., 81000 Podgorica, Montenegro. Author Smit, Harry Naturalis Biodiversity Center, P. O. Box 9517, 2300 RA Leiden, The Netherland. & Department of Biology, University of Montenegro, Cetinjski put b. b., 81000 Podgorica, Montenegro. text Acarologia 2021 2021-04-29 61 2 332 355 http://dx.doi.org/10.24349/acarologia/20214434 journal article 10.24349/acarologia/20214434 2107-7207 5393252 145A84E6-3C8C-4D80-9D9E-B77CAF2A3227 Atractides ( Atractides ) karakali n. sp. Zoobank: 4E8E8D02-DAE8-4A1D-B134-538E3E1DA007 Figures 4-5 Type material — Kyrgyzstan : Holotype ♂ , dissected and slide mounted ( RMNH ), KR8 Chon-Kemin NP, upper part of stream near Ashu resort, Kalman Ashu village, 42°42.276 ′ N , 76°05.101 ′ E , 1644 m a.s.l., 10 Aug. 2013 , leg. Pešić & Smit. Paratypes : 2♀ , same site and data as the holotype , leg. Pešić & Smit, 1♀ , dissected and slide mounted ( RMNH ). Diagnosis — Integument striated; glandularia enlarged (Dgl-4 50-60 µm); Vgl-3 not fused with Cx-IV; acetabula small (maximum diameter < 40 in ♂ , <50 µm in ♀ ) arranged in an obtuse triangle; excretory pore smooth; palp with weak sexual dimorphism, P-2 without a ventrodistal projection, P-4 sword seta near level of distoventral seta; I-L-5 ratio dL/H 3.5; S-1-2 separation short, ˂ 15 in ♂ , ˂ 20 µm in ♀ . Description — General features — Integument striated, muscle insertions unsclerotized. Glandularia enlarged (Dgl-4 50-60 µm), with irregular margins due to secondary sclerotization ( Figure 4A ). Mediocaudal margin Cx-I truncate or slightly convex, apodemes of Cx-II in an obtuse angle in relation to idiosoma midline. Acetabula in an obtuse triangle. Excretory pore smooth; Vgl-1 generally not fused to Vgl-2 (except for older specimens, Figure 5E ). Palp with a weak sexual dimorphism, ventral margins P-2 straight, slightly convex in distal part, P-3 straight or slightly concave, P-4 straight, only slightly protruding near insertion of proximoventral seta, sword seta insertions near distoventral seta ( Figures 5 C-D). I-L-5 with S-1 longish and bluntly pointed, S-2 thicker, proximally enlarged, distance S-1-2 short; I-L-6 proximally slightly thickened, slightly curved, from the centre to the claw furrow with parallel dorsal and ventral margins ( Figures 5 A-B). Male — Genital plate anterior margin slightly convex ( Figure 4B ); P-2 ventral margin slightly convex in distal part ( Figure 5C ). Female — Pregenital sclerite large, gonopore extending far over the anterior margin of the genital plates, medial margin forming an obtuse angle between Ac-1 and Ac-3 ( Figure 5E ). Figure 4 Atractides karakali n. sp . , ♂ holotype, KR8 Kalman Ashu, Kyrgyzstan. A – idiosoma, dorsal view; B – idiosoma, ventral view. Scale bar = 100 µm. Measurements. Male —Idiosoma L 519, W 325; maximum diameter Dgl-4, 48-53. Coxal shield L 313; Cx-III W 319; Cx-I+II mL 99, Cx-I+II lL 188. Genital field L/W 110/120, ratio 0.91, L Ac-1-3: 30-31, 31-34, 33-36. Ejaculatory complex L 104. Gnathosoma — Palp total L 283; dL/H, dL/H ratio: P-1, 28/25, 1.12; P-2, 59/44, 1.35; P-3, 67/35, 1.9; P-4, 93/31, 3.0; P-5, 36/15, 2.4; length ratio P-2/P-4 0.63. Chelicera total L 178. Legs — I-L-5 dL 156, vL 114, dL/vL ratio 1.37, maximum H 45, dL/maximum H 3.5, S-1 L 81, L/W ratio 8.7, S-2 L 74, L/W ratio 6.2, distance S-1-2, 11, dL ratio S-1/2 1.1; I-L-6 dL 105, central H 28, dL/central H ratio 3.7; L I-L-5/6 ratio 1.49. Female — Idiosoma L 737; maximum diameter Dgl-4, 63. Coxal shield L 333; Cx-III W 388; Cx-I+II mL 94, Cx-I+II lL 191. Genital field L/W 188/171, genital plates L 109-111, pregenital sclerite W 147, gonopore L 155, L Ac-1-3: 40-41, 39-42, 34. Egg maximum diameter (n = 2) 162-163. Gnathosoma — Palp total L 332; dL/H, dL/H ratio: P-1, 32/30, 1.07; P-2, 70/46, 1.52; P-3, 86/38, 2.2; P-4, 106/29, 3.65; P-5, 38/14, 2.8; length ratio P-2/P-4 0.67. Gnathosoma vL 123; chelicera total L 201. Legs — I-L-5 dL 181, vL 126, dL/vL ratio 1.43, maximum H 52, dL/maximum H 3.5, S-1 L 96, L/W ratio 8.2, S-2 L 77, L/W ratio 5.8, distance S-1-2, 16, dL ratio S-1/2 1.24; I-L-6 dL Figure 5 Atractides karakali n. sp . , KR8 Kalman Ashu, Kyrgyzstan (A, C, ♂ holotype; B, D-E, ♀ paratype). A-B – I-L-5 and -6; C – palp, lateral view; D – palp, medial view; E – genital field. Scale bars = 100 µm. 114, central H 29, dL/central H ratio 3.9; L I-L-5/6 ratio 1.58. Etymology — The new species is named after the Karakal region from where it originates. Discussion — In the combination of extended glandularia (maximum diameter> 40 µm), and the morphology of I-L, the new species is similar to A. glandulosus (Walter, 1918) , a rhitrobiontic species known from the Alps, southern Germany and the Pyrenees ( Gerecke 2003 ; Smit et al. 2015 ). Males of the latter species differ in Vgl-3 fused to posterior margin of Cx-IV, P-2 with distoventral projection and the P-4 sword seta inserting near the proximoventral seta, both sexes in stouter I-L-5 (ratio dL/maximum H 2.6 –3.0) with wider S-1-2 setal interspace (˃ 15 in ♂ , ˃ 20 µm in ♀ ). Distribution — Kyrgyzstan ; only known from a stream (see Fig 18B in Pešić and Smit 2020) in the Tien Shan mountains at an elevation of about 1,600 meters.