Atractides (Atractides) kyrgyzicus, Pešić & Smit, 2021

Pešić, Vladimir & Smit, Harry, 2021, Water mites of the genus Atractides Koch, 1837 from Kyrgyzstan (Acari: Hydrachnidia: Hygrobatidae) with the description of six new species, Acarologia 61 (2), pp. 332-355 : 340-343

Atractides (Atractides) kyrgyzicus n. sp.

Zoobank: 1F31B19D-2D24-41FB-AD5C-1A565D84A4B0

Figures 6-8

Type material — Kyrgyzstan: Holotype ♂, dissected and slide mounted ( RMNH), KR11 Karakal region , road to May Saz pass, stream, 42°33.491 ′ N, 78°54.023 ′ E, 2216 m a.s.l.,

12 Aug. 2013, leg. Pešić & Smit. Paratypes: 2♂, KR2 Ala Archa NP, rheocrenic spring,

42°36.203 ′ N, 74°28.959 ′ E, 2118 m a.s.l., 9 Aug. 2013, leg. Pešić & Smit, 1♂ dissected and slide mounted ( RMNH).

Females found together with male of A. kyrgyzicus n. sp. and suspect to represent the female sex of the latter species but not included in the type series — Kyrgyzstan: 1♀, KR11 Karakal region, road to May Saz pass, stream, 42°33.491 ′ N, 78°54.023 ′ E, 2216 m a.s.l., 12

Aug. 2013, leg. Pešić & Smit, dissected and slide mounted ( RMNH); 2♀, KR2 Ala Archa NP, rheocrenic spring, 42°36.203 ′ N, 74°28.959 ′ E, 2118 m a.s.l., 9 Aug. 2013, leg. Pešić & Smit,

1♀ dissected and slide mounted ( RMNH).

Other material — Kyrgyzstan: 3♂, KR8 Chon-Kemin NP, upper part of stream near Ashu resort, Kalman Ashu village, 42°42.276 ′ N, 76°05.101 ′ E, 1644 m asl., 10.viii.2013, leg. Pešić

& Smit, 1♂ dissected and slide mounted ( RMNH).

Diagnosis — Integument striated; glandularia maximum diameter ˂ 30 µm; excretory pore smooth; Vgl-1 not fused to Vgl-2. Male: genital field distinctly longer than wide, L/W ratio ˃ 1.1, anterior margin of secondary sclerotization convexly protruding, acetabula in an obtuse triangle; P-2 ventrodistal margin protruding convexly; P-4 ventral setae long, exceeding tip of P-5, sword seta between ventral setae; I-L-5 dL/H ˃ 3.0, S-1-2 separation short, ˂ 20 µm; I-L-6 slender, dL/H ratio 5.3-5.5.

Description — General features — Integument striated, muscle insertions unsclerotized; mediocaudal margin Cx-I nearly truncate, apodemes of Cx-II in an obtuse angle with the idiosoma midline ( Figure 6A ). Excretory pore smooth; Vgl-1 not fused to Vgl-2. Palp with a strong sexual dimorphism, P-4 sword seta between ventral setae. I-L-5 setae S-1 and S-2 distally narrowed, bluntly pointed, S-1 longish, S-2 slightly thicker, proximally enlarged, distance S-1-2 short; I-L-6 proximally thickened, slightly curved, from the centre to the claw furrow with parallel dorsal and ventral margins ( Figure 7A ). Male — Genital field elongated, longer than wide, anterior margin of secondary sclerotization convexly protruding, posterior margin primary of sclerotization slightly indented, acetabula in an obtuse triangle ( Figures 6 A- B); P-2 ventral margin distally convexly protruding, with a longitudinal line separating a medial hump from a lateral, smooth elevation, P-3 stout, P-4 slightly protruding near proximoventral seta ( Figures 7 B-C). Female — Acetabula in a weakly curved line, Ac-2 smaller than Ac-1 and

-3 ( Figures 8 A-B); P-2 ventral margin distally slightly convex, P-3/4 straight ( Figure 8D ).

Measurements. Male (holotype ; in parentheses specimen from KR2) — Idiosoma L 656

(681), W 460 (500); maximum diameter Dgl-4, 24 (26). Coxal shield L 369 (388); Cx-III W

403 (438); Cx-I+II mL 127 (128), Cx-I+II lL 250 (278). Genital field L/W 130 (137)/116 (120),

ratio 1.12 (1.14), L Ac-1-3: 34-36 (42-44), 35-36 (43-44), 45-46 (47-48). Ejaculatory complex

L (169).

Gnathosoma — Palp total L 339 (348); dL/H, dL/H ratio: P-1, 34/31, 1.1 (37/30, 1.25); P-2, 75/64, 1.17 (80/66, 1.22); P-3, 83/49, 1.68 (86/53, 1.62); P-4, 113/47, 2.4 (111/42, 2.6); P-5,

34/16, 2.2 (34/15, 2.3); length ratio P-2/P-4 0.67 (0.72). Chelicera total L 263.

Legs — I-L-5 dL 217 (227), vL 148 (163), dL/vL ratio 1.46 (1.4), maximum H 69 (63), dL/maximum H 3.14 (3.6), S-1 L 109 (97), L/W ratio 8.6 (8.9), S-2 L 89 (84), L/W ratio 5.7 (6.1), distance S-1-2, 18 (15), dL ratio S-1/2 1.23 (1.15); I-L-6 dL 141 (139), central H 27 (25), dL/central H ratio 5.3 (5.5); L I-L-5/6 ratio 1.55 (1.63).

Female (paratype from KR11; in parentheses specimen from KR2) — Idiosoma L 846 (1094), W 644 (869); maximum diameter Dgl-4, 28 (30). Coxal shield L 434 (431); Cx-III W 519 (566); Cx-I+II mL 127 (133), Cx-I+II lL 295 (297). Genital field L/W 209 (221)/186 (223), genital plates L 145-146 (144-152), pregenital sclerite W 87 (106), gonopore L 177 (181), L Ac-1-3: 46-47 (51-56), 44-47 (48-53), 52 (55-59).

Gnathosoma — Palp total L 427 (417); dL/H, dL/H ratio: P-1, 41/39, 1.06 (41/36, 1.1); P-2, 93/72, 1.29 (91/68, 1.34); P-3, 119/55, 2.17 (116/54, 2.15); P-4, 134/37, 3.7 (131/38, 3.5); P-5,

40/16, 2.6 (38/17, 2.2); length ratio P-2/P-4 0.69 (0.69). Chelicera total L 316 (328).

Legs — I-L-5 dL 292 (273), vL 207 (195), dL/vL ratio 1.41 (1.4), maximum H 76 (71), dL/maximum H 3.8 (3.9), S-1 L 130 (127), L/W ratio 8.3 (9.0), S-2 L 97 (108), L/W ratio 5.2

(6.3), distance S-1-2, 22 (24), dL ratio S-1/2 1.34 (1.18); I-L-6 dL 179 (170), central H 29 (29), dL/central H ratio 6.4 (6.0); L I-L-5/6 ratio 1.63 (1.61).

Etymology — Named after the country where the new species was found.

Figures

Figure 6 Atractides kyrgyzicusn. sp., ♂ (A, C, holotype, KR11 May Saz; B, KR8 Kalman Ashu, Kyrgyzstan). A – idiosoma, ventral view; B – photograph of genital field; C – photograph of ejaculatory complex. Scale bar = 100 µm.

Figure 7 Atractides kyrgyzicusn. sp., holotype ♂, KR11 May Saz, Kyrgyzstan. A – I-L-5 and -6; B – palp, lateral view; C – palp, lateral view. Scale bar = 100 µm.

Figure 8 Atractides kyrgyzicusn. sp., (A, C-D, KR11 May Saz; B, KR2 Ala Archa, Kyrgyzstan). A-B – genital field; C – palp, medial view; D – I-L-5 and -6. Scale bar = 100 µm.