Torrenticola semisuta ( Halík, 1930 ), Halik, 1930

Pesic, Vladimir & Smit, Harry, 2010, New records of water mites (Acari: Hydrachnidia) from Malaysia, with descriptions of three new species, Zootaxa 2354, pp. 19-34 : 22

Torrenticola semisuta ( Halík, 1930)

( Fig. 3A–E )

Material. Malaysia, Jerian stream, Fraser’s Hill, 3° 43.479 N 101° 42.935 E, alt. 1011 m, 14.ii.2009, 2/1/0 (1/ 1/0 mounted).

Morphology. Male: Idiosoma (ventral view: Fig. 3B ) L 521, W 417; dorsal shield ( Fig. 3A ) L 434, W 347, L/W ratio 1.25; dorsal plate 414; frontal plate L 97, W 38, L/W ratio 2.6; shoulder plate L 137, W 45, L/ W ratio 3.0; shoulder/frontal plate L ratio 1.4; gnathosomal bay L 124, Cx-1 total L 225, Cx-1 medial L 100, Cx-2+3 medial 59; ratio Cx-1 L/Cx-2+3 medial L 3.8; Cx-1 medial L/Cx-2+3 medial L 1.7; genital field L/W 127/106, L/W ratio 1.2, ejaculatory complex L 185; distance genital field–excretory pore 78, genital field– caudal idiosoma margin 108; capitulum ventral L 272; chelicera L 320; palp ( Figs. 3D–E ) total L 285, dL and %L (in parentheses): P-1, 31 (10.9); P-2, 97 (34.0); P-3 46, (16.1); P-4, 91 (31.9); P-5, 20 (7.0); L P-2/P-4 ratio, 1.07; P-2 ventral projection protruding distally.

Female: Idiosoma (ventral view: Fig. 3C ) L 597, W 497; dorsal shield L 509, W 397, L/W ratio 1.28; dorsal plate 484; frontal plate L 117, W 44, L/W ratio 2.7; shoulder plate L 153, W 55, L/W ratio 2.8; shoulder/frontal plate L ratio 1.3; gnathosomal bay L 143, Cx-1 total L 260, Cx-1 medial L 116, Cx-2+3 medial 22; ratio Cx-1 L/Cx-2+3 medial L 11.8; Cx-1 medial L/Cx-2+3 medial L 5.3; genital field L/W 141/ 132, L/W ratio 1.07; egg maximum diameter L 194; distance genital field–excretory pore 106, genital field– caudal idiosoma margin 178; capitulum ventral L 303; chelicera L 355; palp total L 314, dL and %L (in parentheses): P-1, 34 (10.8); P-2, 112 (35.7); P-3, 52 (16.6); P-4, 97 (30.9); P-5, 19 (6.1); L P-2/P-4 ratio, 1.15; shape and setation as in male.

Remarks. See discussion under T. haliki sp. nov.

Distribution. Malaysia, Burma, Thailand.

Figures

FIGURE 3 A – E. Torrenticola semisuta (Halík, 1930), (A – B, D – E = male; C = female): A = dorsal shield; B – C = ventral shield; D = palp, lateral view; E = palp, medial view. Scale Bars = 100 μm.