3330 Author Pešić, Vladimir Author Smit, Harry Author Saboori, Alireza text Zootaxa 2012 2012-05-31 3330 1 67 journal article 1175­5334 Hygrobates ( Hygrobates ) hamatus K. Viets, 1935 ( Fig. 23A – C ) Material. Iran , Hormozgan Province , IR22-2011, 5 km N of Rudan N of Bandar Abbass , Rudan stream, 27º 28.748 N , 57º 15.648 E , 210 m asl , 21.vii.2011 0/1/0 (mounted) . Morphology. Female — Idiosoma L/W 931/669; dorsum without plates. Coxal field: Cx-I very long. Gnathosoma relatively small and broadly fused at base. Posterior apodemes of Cx-I+II moderately developed, suture line between Cx-III+IV complete, ending at bluntly-pointed medial margin of Cx-III+IV; posterior margin of Cx-IV with moderately developed projections; coxal field L 372, Cx-III W 416. Genital field L/W 136/164; genital plate narrow, L 87-92; egg (n = 2) maximum diameter 153. Palp ( Fig. 23C ): total L 520, dL: P-1, 30; P-2, 142; P-3, 131; P-4, 188; P-5, 29; L P-2/P-4 ratio, 0.76; ventral margin of P-2 and P-3 with numerous small papillae, P-2 and P-3 swollen. Chelicera total L 287. Legs: dL of I-L-2-6 ( Fig. 23B ): 108, 136, 172, 185, 156; dL of IV-L: 141, 144, 231, 286, 325, 265. Remarks. The single specimen from Hormozgan province is provisionally assigned to the Oriental Hygrobates hamatus . It resembles both Hygrobates hamatus and the Afrotropical H. soari K. Viets, 1911 . Cook (1967) described H. hamatus bharatensis Cook, 1967 , from India and stated that this subspecies differs from the stem species in having much smaller projections on the posterior margin of Cx-IV. Later on, Gledhill & Wiles (1997) synonymized this subspecies with the stem species which is widespread in the Oriental region (Pešić et al . 2010) and furthermore reported from New Guinea and Australia ( Wiles 1997c , Cook 1986). Hygrobates hamatus is very similar to H. soari K. Viets, 1911 , a species widspread in the Afrotropical region, reaching in its distribution to northern Oman ( Gerecke 2004b , Smit & Pešić 2010 ). The diagnostic differences separating these two species have been discussed only by Cook (1967) who mentioned that the anterior coxal group is much shorter in H. hamatus bharatensis . More material should be studied in order to get an insight into further diagnostic differences. Similar to Diplodontus silvestrii and D. schaubi , this probably will require applying molecular techniques. Habitat. Sandy/bouldery stream, with strong exposure to sunlight ( Fig. 44D ).