Atractides (Atractides) elazigensis, Esen & Pešić, 2024

Esen, Yunus & Pešić, Vladimir, 2024, Contributions to the knowledge of the water mite fauna (Acariformes, Hydrachnidia) of Türkiye with descriptions of two new species, Acarological Studies 6 (1), pp. 24-33 : 28

Atractides (Atractides) elazigensis sp. nov.

https://zoobank.org/ 12FF196B-5D6B-4325-B91E- 6F3C77E3F41F

Type series: Holotype: male, dissected and slide mounted in Hoyer’s fluid; Elazığ province ( Türkiye), Alacakaya district, Halkalı village, spring and low order streams, 38°32'44" N, 39°56'22" E, 1507 m a.s.l., 12.07.2020, leg. Y. Esen. Paratypes: same data as holotype (1/1/0) ; ibid., 23.08.2020 (1/1/0) .

Diagnosis: Integument lineated; muscle insertions unsclerotized. Genital field with acetabula in an obtuse triangle. Excretory pore smooth; Vgl-3 not fused to Cx-IV; Vgl-1 not fused to Vgl-2. Palp with weak sexual dimorphism, ventral margin of P-2 distally protruding, without projection; I-L- 5/6 larger (L I-L-5/ 6 ♂ ˃170/ ˃130, ♀ ˃ 300/200); S-1/2 longer (S-1/2 ˃ 100/ 80 in ♂, ˃ 130/ 100 in ♀), S-1 long, with truncate tip, S-2 shortened, enlarged; I-L-6 slender and long, I-L-5/6 ˃1.3. Male: P-4 sword seta nearer to distoventral seta, S-1-2 separation 20-25. Female: P-4 sword seta between ventral setae, S-1-2 separation 28-31.

Description. Male (measurements of paratype given in parentheses) Length of idiosoma 430 (413), width 365 (375). Dgl-3 length 20 (21). Coxal field ( Fig. 3A ); coxal field length 317 (308), Cx-3 width 337 (314), Cx-1+2 width 288 (285), Cx-1+2 medial suture line 127 (118) in length. Measurements of mouthparts: chelicera 200 (160) in length, claw 60 (53), palp ( Figs 3B, C ) total length 331 (323), dorsal length of single segments P-1 37 (35), P-2 75 (74), P-3 74 (72), P-4 110 (107), P-5 35 (35), P-3 49 (47) in height, P-4 38 (36) in height; relative total length (% total length) of single segments: P-1 1.1, P-2 22.7 (22.9), P-3 22.4 (22.3), P-4 33.2 (33.1), P-5 1.1; ratio length P-2/P-4 is 0.68 (0.69). Genital field ( Fig. 3A ), L/W 110/131 (98/132), Ac-1-3 length 39 (38), 45 (32), 52 (33).

I-L ( Fig. 3D ), I-L-5 dL 190 (180), vL 125 (119), HA 47 (44), HB 55 (50), I-L-6 length 145 (138), central H 21 (20), ratio length I-L-5/I-L-6 1.31 (1.30), S-1 length 106 (100), S-2 length 85 (80), distance between sword seta of I-L-5 25 (20).

Female (n=2) Length of idiosoma 780 (770), width 672 (680). Dgl-3 length 24 (22). Coxal field ( Fig. 4A ); coxal field length 430 (380), Cx-3 width 563 (498), Cx-1+2 width 460 (342), Cx-1+2 medial suture line 160 (125) in length. Measurements of mouthparts: chelicera 302 (260) in length, claw 90 (73), palp ( Fig. 4C ) total length 509 (394), dorsal length of single segments P-1 47 (40), P-2 111 (91), P-3 141 (102), P-4 160 (120), P-5 50 (41), P-3 58 (50) in height, P-4 32 (30) in height; relative total length (% total length) of single segments: P-1 0.9 (1.1), P-2 21.8 (23.1), P-3 27.7 (25.9), P-4 31.4 (30.5), P-5 1.0; ratio length P-2/P-4 is 0.69 (0.76). Genital field ( Fig. 3D ), L/W 190/202 (187/203), Ac-1-3 length 67 (45), 87 (47), 88 (66). Vgl-1 not fused to Vgl-2 ( Fig. 4B ).

I-L ( Fig. 4E ), I-L-5 dL 330 (303), vL 247 (230), HA 75 (71), HB 88 (81), I-L-6 length 222 (206), central H 24 (22), ratio length I-L-5/I-L-6 1.49 (1.47), S-1 length 142 (135), S-2 length 115 (102), distance between sword setae of I- L-5 31 (28).

Figures

Figure 3. Atractides (Atractides) elazigensis sp. nov. male. A. Coxal and genital field, B. Palp, medial view, C. Palp, lateral view, D. I-L-5/6 (Scale bars = 100).

Figure 4. Atractides (Atractides) elazigensis sp. nov. female. A. Coxal field, B. Vgl-1 and Vgl-2, C. Palp, medial view, D. Genital field, E. I-L-5/6 (Scale bars = 100).