Laelaps ekstremi Zakhvatkin, 1948

Vinarski, Maxim V. & Korallo-Vinarskaya, Natalia P., 2016, An annotated catalogue of the gamasid mites associated with small mammals in Asiatic Russia. The family Laelapidae s. str. (Acari: Mesostigmata: Gamasina), Zootaxa 4111 (3), pp. 223-245 : 228

6. Laelaps ekstremi Zakhvatkin, 1948

Laelaps ekstremi Zakhvatkin, 1948: 71 , figs 6, 10, 18, 20, 21.

Laelaps ekstremi . — Lange, 1955: 334, figs 686, 687; Strandtmann & Wharton, 1958: 61; Costa, 1961: 40, figs 66–69; Mašán & Fenďa, 2010: 36.

Laelaps extremi . — Mrciak, 1964: 166; Senotrusova, 1987: 167, fig. 82; Goncharova et al., 1991: 34.

Laelaps jettmari . — Bregetova, 1956: 108, 114, figs 198, 214, 224–227 (partim); Tipton, 1960: 271 (partim); Goncharova & Buyakova, 1964: 381, fig. 3, 1 (partim).

Type locality. Russia, Volgograd Region, Kotelnikov District.

Type host. Microtus arvalis (Pallas, 1778) .

Principal hosts. Voles of the genus Microtus (according to Zakhvatkin, 1948).

Distribution. Europe, Northern and Central Asia eastward to the Russian Far East, China and Japan ( Zakhvatkin, 1948; Goncharova et al., 1991). In Siberia, it has been recorded from Transbaikalia ( Goncharova et al., 1991).

Remarks. Zakhvatkin (1948) acknowledged that his species ( L. ekstremi ) is very similar to L. jettmari Vitzthum, 1930 from Manchuria. Bregerova (1956) synonymised the two species, but Costa (1961) rejected this synonymy and reestabished L. ekstremi as a valid species (see also Mrciak, 1964).