Hygrobates (Hygrobates) hamatus K. Viets, 1935

Pesic, Vladimir, Yam, Rita S. W., Chan, Benny K. K. & Chatterjee, Tapas, 2012, Water mites (Acari, Hydrachnidia) from Baishih River drainage in Northern Taiwan, with description of two new species, ZooKeys 203, pp. 65-83 : 73-74

Hygrobates (Hygrobates) hamatus K. Viets, 1935 Figs 8 A–C

Material examined.

ECL-BA-3, vi.2010 0/1/0 (mounted). ECL-BA-5, 20.viii.2009 0/1/0.

Remarks.

The specimens from Taiwan are in a good agreement with description of the Oriental Hygrobates hamatus . This species is very similar to Hygrobates soari K. Viets, 1911, a species widspread in the Afrotropical region, reaching in its distribution to northern Oman ( Smit and Pešić 2010). As noted by Pešić et al. (2012) additional material should be studied in order to get an insight into on further diagnostic differences of these two species, what probably will require the application of molecular techniques.

In addition, we gave some measurements of the specimen of Hygrobates hamatus from Baishih River drainage which represented the easternmost record finding of this species.

Female. Idiosoma L/W 881/625. Coxae (Fig. 8A): coxal field L 353, Cx-III W 463, Cx-I+II L/W 260/337. Genital field (Fig. 8B): L/W 145/182, acetabular plates L 101-105; L Ac-1-3: 35-37, 38-39, 29-32. Palp (Fig. 8C): total L 442, dL: P-1, 26; P-2, 118; P-3, 101; P-4, 163; P-5, 34; dL P-2/P-4 ratio, 0.72.

Distribution.

SE Asia, India, New Guinea, Australia, Iran. New for Taiwan.