Chacoan Mouse Opossum

Cryptonanus chacoensis

Comadrejita Rojiza Chaqueña

Family: Didelphidae
Order: Didelphimorphia
Class: Mammalia
Phylum / Division: Chordata
Kingdom: Animalia

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Other common names: Comadrejita Ágil Chaqueña.

Synonyms: Gracilianus agilis, Marmosa agilis.

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Records from Colonia Carlos Pellegrini

Conservation status: Least Concern

Description

The chacoan gracile opossum (Cryptonanus chacoensis) is a species of opossum in the family Didelphidae. It is native to Argentina, Brazil and Paraguay. Its habitat is seasonally flooded grasslands and forests in and near the Gran Chaco.

The red-bellied gracile opossum (Cryptonanus ignitus), previously thought to have been extinct since 1962, has since been reevaluated as synonymous with the chacoan gracile opossum, as several specimens of C. chacoensis have been discovered that display similar coloration to C. ignitus.

Source: Wikipedia, article Cryptonanus chacoensis. Content adapted from Wikipedia, available under the CC BY-SA 4.0 license. Accessed on 15/07/2026.