Ixodes pomerantzevi Serdjukova, 1941

Ixodes pomerantzevi Serdjukova, 1941: 519.

Recorded hosts.

Mammalia: Apodemus agrarius (striped field mouse), Craseomys rufocanus (grey red-backed vole), Erinaceus amurensis Schrenk (Amur hedgehog), Eutamias sibiricus (Siberian chipmunk), Microtus fortis (reed vole), Myodes rutilus (northern red-backed vole), Sorex araneus (common shrew) (Filippova 1977), Sorex caecutiens (Laxmann’s shrew), Sorex unguiculatus Dobson (long-clawed shrew), (individual specimens ((Okulova et al. 1986), Rattus norvegicus (brown rat), Tscherskia triton (De Winton) (greater long-tailed hamster) (Filippova 1977).

Recorded locations

(Fig. 19). Russia: Sikhote-Alin – outskirts of Dal’ny Kut (the northernmost point of finding (Filippova 1977), valley of the Dorozhnaya River, Dalnegorsk, Ussurisky (former Komarovskii) Nature Reserve; coast of the Sea of Japan – outskirts of the villages Terney, Dukhovo, Kamenka, Lazovsky nature reserve, Fokino (former Promyslovka), the bays Razboynik and Linda; the coast of the Peter the Great Gulf: Kedrovaya Pad Nature Reserve, the rural localities Barabash and Posyet (Serdjukova 1941; Pomerantsev 1950; Slonov 1961; Khudyakov 1963; Belyaev and Filippova 1976).

Ecology and other information.

Ixodes pomerantzevi is a relict species occurring on the East Asian coast (Filippova 1977) and in Russia its distribution is limited to a few locations in Outer Manchuria (a. k. a. Primorsky Krai) in the Russian Far East (Tsapko 2020). It is also known to occur in Korea (Kim et al. 2009 a, 2010, 2011) and China (Guo et al. 2016). Predominantly it can be found in coniferous and broad-leaf forests, or secondary forests and bush thickets, as well as rock and stone outcrops among trees in the Sikhote-Alin and on the coast of the Sea of Japan (Belyaev and Filippova 1976).

Luh and Woo (1950) supposed that I. pomerantzevi is possibly a synonym of Ixodes angustus; Filippova (1977) considered it as valid and in the last list of valid tick species names, it is also considered valid (Guglielmone et al. 2020).

Ixodes pomerantzevi is a nidicolous tick species, an ectoparasite of rodents, hedgehogs, and shrews (Filippova 1977).

The type specimen of I. pomerantzevi is deposited at the Zoological Institute of the Russian Academy of Sciences and include the holotype: female; [Russia], DVK [Primorskii Terr.], Suputinskii [Komarovskii or Ussurisky] Nature Reserve, from Myodes rufocanus, 9 – 13. VI. 1939, coll. B. I. Pomerantsev; AL I 502. Description – Filippova 1977: 128–132 (female, male - unknown, nymph, larva) (Filippova 2008).