Atractides (Polymegapus) putihi Wiles, 1991

Smit, Harry & Pešić, Vladimir, 2014, Water mites from Mount Kinabalu and the Crocker Range, Borneo, Malaysia (Acari: Hydrachnidia), with the description of 34 new species, Zootaxa 3876 (1), pp. 1-71 : 33-34

Atractides (Polymegapus) putihi Wiles, 1991

( Figs. 19A–D )

Material examined. 0/2/0 (0/1/0 mounted), Kipungit River, Poring Hot Springs, Mt. Kinabalu, Borneo, Malaysia, 6º 02.776 N, 116º 41.432 E, 568 m asl., 15-ix-2012.

Female. Described by Wiles (1991) and Pešić & Smit (2009). Here we give additional figures and measurements based on a female from Borneo.

Measurements —Idiosoma length/width 483/366; coxal field: length 263; Cx-III width 272; Cx-I+II medial length 114, lateral length 181; genital field length/width 116/122, genital plate length 58–60, length Ac 1–3: 22–25, 22–24, 23–24; egg (n = 1) maximum diameter 110.

Palp: Total length 230, dorsal length/height, dorsal length/height ratio: P1, 23/21.5, 1.07; P2, 55/32, 1.72; P3, 42/27, 1.52; P4, 75/21, 2.66; P5, 35/12, 2.8; length P-2/P-4 ratio 0.74. Capitulum ventral length 88, chelicera total length 145.

Legs: I-leg-5 dorsal length 111, ventral length 100, dorsal length/ventral length ratio 1.1, maximum height 39, dorsal length/maximum height 2.8, S-1 length 52, length/width ratio 8.4, S-2 length 51, length/width ratio 6.7, distance S-1-2 3.0, length ratio S-1/2 1.0; I-leg-6 length 62, central height 11, length/central height ratio 5.7; length I-leg-5/6 ratio 1.8.

Remarks. The single female from Kipungit River matches the general morphology of Atractides putihi Wiles, 1991 . This species was described by Wiles (1991) from Malaysia, based on a single female and later on reported by Pešić & Smit (2009 male and female) from Thailand. According to Wiles (1991) several specimens were collected from Sulawesi. A. putihi differs from other members of the subgenus Polymegapus in having I-leg-5 with ventral margin shorter than dorsal margin ( Fig. 19D ) and probably represent an early derivative member with the typical I- L not yet fully developed.

Distribution. Malaysia ( Wiles 1991), Thailand ( Pešić & Smit 2009). New for Borneo.

Figures

FIGURE 19 A – D. Atractides putihi Wiles, 1991, Kipungit River, female: A = idiosoma, ventral view; B = palp, medial view; C = capitulum and chelicera; D = I-leg- 5 and - 6. Scale bars = 100 Μm.