Torrenticola maharashtris Cook, 1967

Pesic, Vladimir & Smit, Harry, 2009, Water mites of the family Torrenticolidae Piersig, 1902 (Acari: Hydrachnidia) from Thailand, Part I. The genera Torrenticola Piersig, 1896, Neoatractides Lundblad, 1941 and Pseudotorrenticola Walter, 1906, Zootaxa 1982, pp. 38-62 : 39

Torrenticola maharashtris Cook, 1967

( Figs. 1–6)

Material. Thailand, stream near Haewsai Waterfall , Nam Nao NP, alt. 425 m, 16.xi.2007, 16° 40.668 N 101° 41.856 E, leg. Smit (3/1/0), one male and one female dissected and slide mounted in Hoyer's fluid .

Morphology. Male: Idiosoma (ventral view: Fig. 1) L 575, W 416; dorsal shield ( Fig. 2) L 456, W 347, L/ W ratio 1.3; dorsal plate 413; shoulder plate L 144, W 53, L/W ratio 2.7; frontal plate L 116, W 62, L/W ratio 1.9; shoulder/frontal plate L ratio 1.24; gnathosomal bay L 109, Cx-1 total L 213, Cx-1 medial L 103, Cx-2+3 medial 113; ratio Cx-1 L/Cx-2+3 medial L 1.9; Cx-1 medial L/Cx-2+3 medial L 0.9; genital field L/W 125/ 100, L/W ratio 1.25, ejaculatory complex conventional in shape; distance genital field–excretory pore 75, genital field–caudal idiosoma margin 113; capitulum ( Fig. 4) ventral L 272; chelicera L 297; palp ( Fig. 6) total L 271, L and %L (in parentheses): P-1 30 (11.1), P-2 77 (28.4), P-3 58 (21.4), P-4 88 (32.5), P-5 18 (6.7); P-2/P-4 ratio 0.88; ventrodistal protuberance of P-2 long and curved distally, ventral protuberances of P-4 ending in two tips separated by a concavity.

Female: Idiosoma (ventral view: Fig. 3) L 663, W 444; dorsal shield ( Fig. 5) L 531, W 388, L/W ratio 1.4; dorsal plate 475; shoulder plate L 153, W 62, L/W ratio 2.7; frontal plate L 125, W 68, L/W ratio 1.8; shoul- der/frontal plate L ratio 1.2; gnathosomal bay L 119, Cx-1 total L 231, Cx-1 medial L 112, Cx-2+3 medial 88; ratio Cx-1 L/Cx-2+3 medial L 2.6; Cx-1 medial L/Cx-2+3 medial L 1.3; genital field L/W 128/116, L/W ratio 1.1; distance genital field–excretory pore 144, genital field–caudal idiosoma margin 216; capitulum ventral L 297; chelicera L 334; palp total L 296, L and %L (in parentheses): P-1 25 (8.4), P-2 86 (29.1), P-3 64 (21.6), P-4 100 (33.8), P-5 21 (7.1); P-2/P-4 ratio 0.86; shape and setation as in male.

Remarks. The specimens from Thailand agree with Torrenticola maharashtris Cook due to sub-apical Cxgl-4, a long ventral projection on P-2 which curves distally, the medial suture line of Cx-2+3 long in both sexes (ratio Cx-1 L/Cx-2+3 medial L: 1.9 in male, 2.6 in female), dorsal shield with broad frontal plates (L/W ratio <2), and Cx-4 posteriorly not strongly extended behind the genital field.

Distribution. India, Java, Peninsular Malaysia. New for Thailand.