Aquatic insects, especially mayflies (Ephemeroptera), stoneflies (Plecoptera), caddisflies (Trichoptera), beetles (Coleoptera), and dipterans (Diptera) are important biodiversity components in streams and rivers and commonly used as indicators of ecosystem health in lotic freshwaters (e.g., Blakely et al., 2014; Mustow, 2002; Ofenb.ck et al., 2008; Varnosfaderany et al., 2010). However, aquatic insects are not assessed herein in detail, due to vast data gaps within the region, except for north-east Asia and Australia (e.g., Bae, 2001; J.ch & Ji, 1995, 1998, 2003; Neboiss, 1986) and some exceptions in tropical countries and subregions of the Asia-Pacific region (e.g., Freitag et al., 2016; J.ch, M. A., & Balke, 2010; Malicky, 2010).