Characteristics: Slender species, measuring 8 to 9cm in length. Its back is yellowish-gray, and its belly is lighter. Its long tail is about the same length as its body and head added, and its legs are dark and free of webbing.

Distribution: Throughout Brazil.

Habitat: Mice live near or even in homes, in fields and crops, or in other environments distant from improvements.

Habits: A nocturnal species, it hides extremely easily in tight, hard-to-reach spaces.

Diet: Omnivorous, feeding on cereals, bran, bread, cheese, and with low demand in terms of water consumption.

Breeding: The females' pregnancy lasts 19 to 21 days, and they have 5 to 6 litters per year. There are 4 to 8 pups in each litter.

In the UFRA area: The species is considered rare because it was only found once in all survey campaigns. Its occurrence was limited to organic sugarcane fields, as it benefits from the great availability and biodiversity of invertebrates living in decaying organic matter in soils.