The Lorrain dormouse is recorded in western and central Africa. The study reports records from gallery forest, forest edges, woodland savanna, farms, and buildings, with no captures reported from primary forest.
Compared with the closely related G. walterverheyeni, the Lorrain dormouse has a proportionally longer bony snout (rostrum), according to the skull comparison.
Collection notes record it in gallery forests, forest margins, woodland savanna, banana and cocoa farms, occupied buildings, and abandoned buildings. It apparently has not been captured in primary forest.
An extinction-risk assessment has not been added yet.