Abstract
Two myobiid mite species, Protomyobia brevisetosa Jameson, 1948 (known from U. S. A.) and Amorphacarus elongatus (Poppe, 1896) (known from Europe), were reported from shrews (Sorexunguiculatus, Sorex caecutiens saevus) of Hokkaido, Japan. Both of these mites showed minor host specificity and are often found together on a same shrew. Hokkaido specimens of A. elongatus differ slightly from the descriptions of A. elongatus by Poppe (1896) and by Radford (1948), but more specimens are needed before we can confirm the difierences between Hokkaido population of A. elongatus and those of Europe.
