Hirstionyssus gudauricus Razumova 1957: 45, fig. 1, 2.
Hirstionyssus gudauricus— Senotrusova 1982: 11, figs 4–5; Senotrusova 1987: 100, figs 48, 49; Goncharova et al. 1991: 70; Mašán & Fend’a 2010: 132, figs 132–138.
Hirstionyssus tatricus Mrciak 1958: 84.
Hirstionyssus tatricus— Uchikawa 1974: 266, figs 5–7.
Echinonyssus gudauricus— Tenorio 1984: 269.
Echinonyssus tatricus— Tenorio 1984: 278.
Type locality: Georgia, Kazbeghi District, vicinities of the villages of Kobi, Suatisi.
Type series: ZIN and the Department of Zoology of the North-Ossetian Pedagogical Institute (Vladikavkaz, Russia).
Type host: Chionomys gud (Satunin, 1909), the Gudaur vole.
Host range: H. gudauricus infests hosts belonging to varied vole genera (Alticola, Chionomys, Clethrionomys, Microtus); sometimes is collected from shrews (Razumova 1957; Senotrusova 1987; Mašán & Fend’a 2010). It seems that no species can be considered as the chief host of this generalist parasite.
Distribution: Northern and Central Europe, Caucasus, Kazakhstan, Western and Eastern Siberia (Senotrusova, 1987; Nikulina 2004; Huhta 2016); mostly in high mountain regions (Senotrusova 1987). Uchikawa (1974) recorded this species from Japan (as H. tatricus).