Nesoryzomys indefessus (Thomas 1899)

Wilson, Don E. & Reeder, DeeAnn, 2005, Order Rodentia - Family Cricetidae, Mammal Species of the World: a Taxonomic and Geographic Reference (3 rd Edition), Volume 2, Baltimore: The Johns Hopkins University Press, pp. 955-1189 : 1134

publication ID	https://doi.org/ 10.5281/zenodo.7316535
persistent identifier	https://treatment.plazi.org/id/31BA20A9-78E9-6A37-D410-885287024BD9
treatment provided by	Guido
scientific name	Nesoryzomys indefessus (Thomas 1899)
status

Treatment

[Nesoryzomys] indefessus (Thomas 1899) , Ann. Mag. Nat. Hist., ser. 7, 4: 280.

Type Locality: Ecuador, Galápagos Archipelago, Santa Cruz (= Indefatigable) Isl, Academia Bay.

Vernacular Names: Santa Cruz Nesoryzomys.

Synonyms: Nesoryzomys narboroughi Heller 1904 .

Distribution: Santa Cruz, Baltra (= South Seymour), and Fernandina (= Narborough) Isls.

Conservation: IUCN – Extinct as N. indefessus, Near Threatened as N. narboroughi . Nesorysomys i. indefessus is probably extinct, none documented since 1934 (see Patton and Hafner, 1983). Populations of N. i. narboroughi on Fernandina Isl, which lacks commensal Rattus and Mus , appear stable (see Dowler et al., 2000; Patton and Hafner, 1983).

Discussion: Patton and Hafner (1983:539) recommended that indefessus , narboroughi , and swarthi are "best considered races of a single species, which differ primarily in pelage color." Their analyses sustain this conclusion with regard to indefessus and narboroughi but not the strong craniodental differentiation demonstrated for N. swarthi .