HMW 2018 describes the Paramushir Shrew as endemic to Paramushir Island in the North Kurils. It is recorded in riverside bushes, and its coat differs between juveniles and adults.
Juveniles have a tricolored coat with a distinct dark mantle. Adults are nearly bicolored, with a sharp boundary between the dark-brown back and pale gray to whitish sides and underside.
It is recorded in riverside bush habitat. The HMW 2018 species account gives no information on its activity times.
An extinction-risk assessment has not been added yet.