Macronyssus heteromorphus Dusbábek & Radovsky, 1972: 134.
Macronyssus heteromorphus.— Uchikawa, 1979b: 255; Medvedev et al., 1991; Radovsky, 2010: 56.
Type locality: Shikotan Island (Kuril Islands) (Dusbábek & Radovsky, 1972).
Type host: [Rattus norvegicus (Berkenhout, 1769)] (Dusbábek & Radovsky, 1972).
Material. F and M ex Myotis davidii from Tes-Khem river, 23 July 2016, leg. A. V. Zhigalin.
Distribution in Russian Federation: Russian Federation: Khanty-Mansi Autonomous Region (Orlova et al., 2019), Altai Region (Orlova et al., 2017b), Novosibirsk Province (Orlova et al., 2017a), Khakassia Republic (Orlova et al., 2017a), Tuva Republic (Orlova et al., 2015a, 2015d; present paper), Krasnoyarsk Region (Stanyukovich, 1997; Orlova et al., 2017a), Kamchatka Region (Medvedev et al., 1991), Primorskiy Region (Medvedev et al., 1991), Sakhalin Province (Shikotan Island) (Dusbábek & Radovsky, 1972), [Far East] (Stanyukovich, 1997).
Distribution outside Russian Federation: Unknown.
Hosts. [Rattus norvegicus] (Dusbábek & Radovsky, 1972), Myotis petax (as M. daubentonii — Stanyukovich, 1997), M. sibiricus (as Myotis brandtii and M. mystacinus — Stanyukovich, 1997), M. brandtii (Orlova et al., 2019), M. ikonnikovi (Beron, 2014), Myotis davidii (present paper), Eptesicus nilssonii (Medvedev et al., 1991; Stanyukovich, 1997), Plecotus ognevi (as Plecotus auritus — Stanyukovich, 1997), Murina hilgendorfi (as Murina leucogaster — Medvedev et al., 1991; Stanyukovich, 1997), Miniopterus schreibersi (Beron, 2014).