Water mites (Acari, Hydrachnidia) from Baishih River drainage in Northern Taiwan, with description of two new species

Abstract

New records of water mites (Acari: Hydrachnidia) from Baishih River drainage of north Taiwan, are presented. Twelve species are recorded, of which ten are new for Taiwan; two of them, Torrenticola projectura and Hygrobates taiwanicus are described as new for science.

Torrenticolid water mites from Korea and the Russian Far East

“…Males of Torrenticola brevirostris and Torrenticola nanshihensis differ in a prominent suture line of Cx-IV starting at a right angle from the genital field, excretory pore on the same level as Vgl-2 and more away from the line of primary sclerotization and P-4 stockier with well developed ventral tubercles (see: Di Sabatino et al 2010 for Torrenticola brevirostris , and Pešić et al 2012 for Torrenticola nanshihensis ). Torrenticola projectura clearly separates in having P-3 with a long tapering ventral protrusion which curves distally (Pešić et al 2012a). Males of Torrenticola retractipora can easily be distinguished by larger dimensions of the idiosoma, a differently shaped ejaculatory complex with large proximal chamber (see: Lundblad 1969), and a moderately long median suture line of Cx-II+III (101 μm, data taken from Wiles 1997).…”