Studies on water mites of the family Hygrobatidae (Acari, Hydrachnidia) from Iran, I. The water mite genus Atractides Koch, with the description of five new species Author Pesic, Vladimir Author Saboori, Alireza Author Asadi, Mahdieh Author Vafaei, Reza text Zootaxa 2004 495 1 40 journal article 10.5281/zenodo.157855 2fcc9637-0666-42af-a7ea-47adc189b600 1175­5326 157855 A2244F7C-7DB5-4461-AF1D-85CE04C5EA25 Atractides baderi Schwoerbel & Sepasgozarian, 1976 ( Figs. 59–65 ) Type series: Holotype ɗ, Typ. P. J/25, Atractides (Iranomegapus) sepasi . ɗ. River near Delijan, 0 8.10.1974 , coll. Schwoerbel. Paratype Ψ, P. J/26. Allotyp, label and state as holotype . Probably Schwoerbel planned to describe this species under the name of A. sepasi , but latter change in baderi before publication. FIGURES 59–65. Atractides baderi Schwoerbel & Sepasgozarian, 1976 , (59, 60, 62, 65 = male; 61, 63, 64 = female): 59 = coxal field; 60 = genital field; 61 = I­L­5/6; 62 = palp; 63 = palp; 64 = genital field; 65 = I­L­5/6. Scale bars = 0.1 mm. Diagnosis : dorsal integument: finely striated; muscle attachments: unsclerotized. I­L: I­L­5 with S­1and ­2 rather short, I­L­6 distally thickened, in the center narrowed. Genital field: Ac small and roundish, in a curved line. Excretory pore: smooth; Vgl­1: not fused with Vgl­2. Palp: P­2 and P­3 each with a ventral protrusion, P­4 sword seta inserted halfway between ventral hairs. Description: Male (in parentheses data from Schwoerbel & Sepasgosarian 1976 ):Length of idiosoma (800), width (640). Dorsally the integument is finely striated; muscle attachments: unsclerotized. Coxal field ( Fig. 59 ); length between anterior end of first coxae and posterior end of fourth coxae 374; Cx­3 width 479, Cx­1+2 width 366; Cx­ 1+2 medial suture 83 in length. Measurements of mouthparts: chelicera 277 in length, claw 77 in length; palp total length 448, dorsal length and relative length (% total length, in parentheses) of single segments: P­1 40 (8.9), P­2 102 (22.8), P­3 123(27.5), P­4 140 (31.3), P­5 43 (9.6); length ratio P­2/P­4 is 0.73; palp ( Fig. 62 ): P­2 and P­3 each with a ventral protrusion more or less conus­shaped, P­4 sword seta inserted halfway between ventral hairs. Genital field ( Fig. 60 ): anterior margin straight, posterior margin convex; Ac small, in a curved line, approached to the distal edge of the genital field; 115 in length, 139 in width, Ac­1­3 length 14­12­13 ; excretory pore smooth; Vgl­1: separated from Vgl­2. I­L ( Fig. 65 ): I­L­5 little modified, with S­1/2 rather short, I­L­6 distally thickened, in the center narrowed; I­L­5 dorsal length 205, I­L­5 central height 59 (40), ratio dorsal length I­L­5/central height 3.47 (5.1), S­1 length 80, ratio length S­1/width 12.0, S­2 length 66, ratio length S­2/width 10.7, distance between sword setae of I­L­5 14 (20); ratio length S­1/2 1.21; I­L­6 length 172, I­L­6 central height 39, ratio length I­L­6/central height 4.4; ratio length I­L­5/6 1.19. Female (in parentheses data from Schwoerbel & Sepasgosarian 1976 ): Length of idiosoma (770), width (660). Dorsally the integument is finely striated; muscle attachments: unsclerotized. Coxal field: length between anterior end of first coxae and posterior end of fourth coxae 464; Cx­3 width 631; Cx­1+2 medial suture 86 in length; distance from lateralmost tips of Cx­2 to the medioposterior edge of Cx­1+2 300. Measurements of mouthparts: palp total length 562, dorsal length and relative length (% total length, in parentheses) of single segments: P­1 47 (8.4), P­2 130 (23.1), P­3 162 (28.8), P­4 175 (31.1), P­5 48 (8.5); length ratio P­2/P­4 is 0.74; palp ( Fig. 63 ): P­2 and P­3 each with a ventral protrusion more or less conus­shaped, P­4 sword seta inserted halfway between ventral hairs. Genital field ( Fig. 64 ): Ac small, in a curved line, approached to the distal edge of the plates; genital plates 119 in length, 32 in width, Ac­1­3 length 17­17­19; excretory pore smooth; Vgl­1: separated from Vgl­2. I­L ( Fig. 61 ): I­L­5 dorsal length 269, I­L­5 central height 69 (32 [probably basal height]), ratio dorsal length I­L­5/central height 3.9, S­1 length 84, ratio length S­1/width 14.6, S­2 length 71, ratio length S­2/ width 8.7, distance between sword setae of I­L­5 15 (19); ratio length S­1/2 1.18; I­L­6 length 214, I­L­6 central height 47, ratio length I­L­6/ central height 4.6; ratio length I­L­5/6 1.26. Remarks: Until now, this species has remained easily recogniceable on the base of the diagnostic features given here. It is the only species in Palaearctic with protruding ventral margin of P­ 3 in females. The differences between orginal description and our measurements are probably due to squeezing in the holotype preparation. Distribution : Iran .