The Isarog shrew mouse is a small, robust rodent known from Mount Isarog on Luzon. It is active by day and night and feeds on earthworms and other soft-bodied invertebrates.
The paper revising the genus describes A. luzonensis as small and robust, with a short tail.
The IUCN assessment reports activity both day and night and a diet of earthworms and soft-bodied invertebrates.
An extinction-risk assessment has not been added yet.