Torrenticola kinabaluensis, Pešić & Smit, 2014

Pešić, Vladimir & Smit, Harry, 2014, Torrenticolid water mites (Acari: Hydrachnidia: Torrenticolidae) from Malaysian Borneo, Zootaxa 3840 (1), pp. 1-72: 8-11

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Torrenticola kinabaluensis

n. sp.

Torrenticola kinabaluensis   n. sp.

( Figs. 4A–E View FIGURE 4 , 5A–B View FIGURE 5 , 9C–D View FIGURE 9 , 10C–E View FIGURE 10 , 23B View FIGURE 23 )

Type series. Holotype male, dissected and slide mounted, Malaysia, Borneo , Mahua stream, downstream of national park entrance, Crocker Range, 5º46.491 N, 116º25.770 E, alt. 865 m asl., 22.ix.2012 Smit GoogleMaps   . Paratypes: one male, same data as holotype GoogleMaps   ; two males, one female, Little Lumotok stream, Sayap, Mt Kinabalu, 6º09.497 N, 116º34.027 E, alt. 1065 m asl., 17.ix.2012 Smit GoogleMaps   , one male and one female dissected and slide mounted; one male, Mahua river , upstream, 5º47.939 N, 116º24.317 E, 1050 m asl., 21.ix.2012 Smit GoogleMaps   .

Further records. Malaysia, Borneo : Great Lumotok stream, Mt Kinabalu , 6º09.336 N, 116º08.417 E, alt. 433 m asl., 18.ix.2012 Smit 0/1/0; unnamed stream Bansadon Trail , GoogleMaps   Inobong , Crocker Range , 5º51.456 N, 116º68.403 E, 18.ix.2012 Smit 0/1/0; Kipungit River , Poring Hot Springs , GoogleMaps   Mt. Kinabalu , 6º02.776 N, 116º41.432E, 568 m asl., 15.ix.2012 Smit 1/0/0; GoogleMaps   Kibamabangan River, Crocker Range, 5º51.28 N, 116º08.417 E, 433 m asl., 18.ix.2012 Smit 0/2[one juvenile]/0 GoogleMaps   .

Diagnosis. Idiosoma elongated (dorsal shield L/W ratio 1.5); shoulder platelets fused to the large dorsal plate; Cxgl–4 far posterior at margin of Cx-I/II, between I–L and II–L insertions, but closer to I–L insertion; P-2 with a laterally compressed, longish (> 30% of ventral margin), anteriorly directed ventrodistal extension.


General features —Idiosoma elongated; shoulder platelets fused to the large dorsal plate; dorsal shield with colour pattern as illustrated in Figs. 9C–D View FIGURE 9 ; gnathosomal bay U-shaped, proximally rounded; Cxgl–4 far posterior at margin of Cx-I/II, between I–L and II–L insertions, but closer to I–L insertion; suture lines of Cx-IV extending posteriorly beyond posterior margin of genital field, laterally curved; excretory and Vgl-2 pore away from the line of primary sclerotization, excretory pore slightly anterior, or on the level with Vgl-2; gnathosomal rostrum long, ventral margin in lateral view curved ( Fig. 4E View FIGURE 4 ); P-2 shorter than P-4 (L P-2/P-4 ratio 0.9), ventral margin of P-2 distally with a laterally compressed, longish (>30% of ventral margin), anteriorly directed and apically serrated hyaline extension and a very short, denticle-like seta laterally at base of projection; P-3 with a shorter, subrectangular, apically serrated ventrodistal projection, and a moderately long seta laterally at base of projection; P-4 slender, with ventral tubercles pointed and separated, bearing one long and three short setae ( Figs. 4C–D View FIGURE 4 ). Male: medial suture line of Cx-II+III relatively long; genital field subrectangular; ejaculatory complex conventional in shape ( Fig. 23B View FIGURE 23 ). Female: genital field pentagonal in shape.


Male (holotype)—Idiosoma (ventral view: Figs. 4B View FIGURE 4 ) L 600, W 387; dorsal shield ( Figs. 4A View FIGURE 4 , 9C View FIGURE 9 ) L 492, W 336, L/W ratio 1.46; dorsal plate L 457; frontal plate L 119, W 41–43, L/W ratio 2.8–2.9. Gnathosomal bay L 108, Cx-I total L 214, Cx-I mL 106, Cx-II+III mL 109; ratio Cx-I L/Cx-II+III mL 2.0; Cx-I mL/Cx-II+III mL 0.97. Genital field L/W 103/87, ratio 1.19; distance genital field-excretory pore 128, genital field-caudal idiosoma margin 172. Gnathosoma vL 281; chelicera total L 319; palp total L 252, dL/H, dL/H ratio: P-1, 28/23, 1.2; P-2, 76/42, 1.8; P-3, 48/38, 1.27; P-4, 85/20, 4.2; P-5, 15/11, 1.35; P-2/P-4 ratio 0.90.

Female (paratype from Little Lumotok stream)—Idiosoma (ventral view: Figs. 5A View FIGURE 5 , 10E View FIGURE 10 ) L 703, W 418; dorsal shield ( Fig. 9D View FIGURE 9 ) L 553, W 364, L/W ratio 1.52; dorsal plate L 510; frontal plate L 131–137, W 45–47, L/W ratio 2.9. Gnathosomal bay L 151, Cx-I total L 270, Cx-I mL119, Cx-II+III mL 103; ratio Cx-I L/Cx-II+III mL 2.62; Cx-I mL/Cx-II+III mL 1.16. Genital field L/W 136/114, ratio 1.19; distance genital field-excretory pore 143, genital field-caudal idiosoma margin 192. Gnathosoma vL 334; chelicera total L 378; palp total L 282, dL/H, dL/H ratio: P-1, 32/28, 1.17; P-2, 90/52, 1.73; P-3, 51/42, 1.21; P-4, 94/23, 4.1; P-5, 15/12, 1.25; P-2/P-4 ratio 0.96.

Etymology. Named after the mountain (Kinabalu) where the new species was found.

Discussion. See discussion under T. borneoensis   .

Habitat. Sandy/ bouldery streams, shaded by rain forest ( Figs. 43A, C View FIGURE 43 ).

Distribution. Borneo.