4. Ixodes acutitarsus (Karsch, 1880) .

Oriental: 1) China (south), 2) India, 3) Myanmar, 4) Nepal (south and central), 5) Taiwan, 6) Thailand, 7) Vietnam; Palearctic: 1) China (north), 2) Japan (except the Ryukyu Islands), 3) Nepal (north and central) (Yamaguti et al. 1971, Tanskul et al. 1983, Keirans 1985b, Robbins 2005, Kolonin 2009, Chen et al. 2010, Takano et al. 2014, Pun et al. 2018, Petney et al. 2019, Zhao et al. 2021).

Clifford et al. (1975a) stated that the record of Ixodes acutitarsus in Indonesia published by Santos Dias (1961a) requires confirmation, and Indonesia is not included within the range of this tick.