Until recently, this species was known only from the type locality; which is on the western slope of the extinct Volcán San Martín Tuxtla in Veracruz, Mexico (Hutterer 2005). It has been recorded from 1,463 m up to the summit of the volcano at 1,650 m asl (Goldman 1951). Recently, it was found at three additional localities in the vicinity of the type locality (Cervantes and Guevara 2009). These localities lie on the south face of the volcano and just to the north west of the nearby Catemaco Lake (Cervantes and Guevara 2009). It has been hypothesized that this shrew probably occurs in suitable habitats throughout that Sierra (Choate1970). However, a recent study on the mammalian diversity of Sierra de Santa Martha, Veracruz did not record the presence of this species (Gonzalez Christen 2008).