Authority citation: Thomas, O. 1906-04-01. A third genus of the Ichthyomys group. Annals and Magazine of Natural History (7)17(100):421-423.
Authority publication link: https://www.biodiversitylibrary.org/page/51472473
Original name as described: Rheomys Underwoodi
Nominal names: underwoodi O. Thomas, 1906
Other common names: Underwood's Ichthyomyine
Taxonomy
Subclass: Theria -- Infraclass: Placentalia -- Order: Rodentia -- Family: Cricetidae -- Subfamily: Sigmodontinae -- Tribe: Ichthyomyini
Type specimen voucher catalogue number: BMNH:Mamm:1907.5.30.5
Type locality: Tres Ríos, Cartago, Costa Rica.
Country distribution (coarse map shown below; most species exist in only part of countries): Costa Rica (CRI) | Panama (PAN)
Species Status: This species is currently living, it lives in wild habitats, its taxonomic status is currently accepted, and it is listed in MSW3 2005.
IUCN Red List of Threatened Species status: Least concern
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