Bibimys

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Cladus: Sarcopterygii
Cladus: Rhipidistia
Cladus: Tetrapodomorpha
Cladus: Eotetrapodiformes
Cladus: Elpistostegalia
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Cladus: Synapsida
Cladus: Eupelycosauria
Cladus: Sphenacodontia
Cladus: Sphenacodontoidea
Cladus: Therapsida
Cladus: Theriodontia
Cladus: Cynodontia
Cladus: Eucynodontia
Cladus: Probainognathia
Cladus: Prozostrodontia
Cladus: Mammaliaformes
Classis: Mammalia
Subclassis: Trechnotheria
Infraclassis: Zatheria
Supercohors: Theria
Cohors: Eutheria
Infraclassis: Placentalia
Cladus: Boreoeutheria
Superordo: Euarchontoglires
Ordo: Rodentia
Subordo: Myomorpha
Superfamilia: Muroidea

Familia: Cricetidae
Subfamilia: Sigmodontinae
Tribus: Akodontini
Genus: Bibimys
Species: B. chacoensis – B. labiosus – B. torresi
Name

Bibimys Massoia, 1979: 2

Type species: Bibimys torresi Massoia, 1979, by original designation.
References
Primary references

Massoia, E. 1979. Descripción de un genero y especie nuevos: Bibimys torresi (Mammalia–Rodentia– Cricetidae–Sigmodontinae–Scapteromyini). Physis 38: 1–7.

Additional references

Pardiñas, U.F.J., D’Elía, G. & Teta, P. 2015. Genus Bibimys Massoia, 1979. Pp. 204–208 in Patton, J.L., Pardiñas, U.F.J. & D’Elía, G. (eds.), Mammals of South America. Volume 2. Rodents. The University of Chicago Press: Chicago, Illinois. ISBN 978-0-226-16957-6. Reference page.

Links

Bibimys in Mammal Species of the World.
Wilson, Don E. & Reeder, DeeAnn M. (Editors) 2005. Mammal Species of the World – A Taxonomic and Geographic Reference. Third edition. ISBN 0-8018-8221-4.

Vernacular names
English: Crimson-nosed Rats

Bibimys is a genus of new world rats.[1] Commonly known as the crimson-nosed rats, there are three species:

Bibimys chacoensis - Chaco crimson-nosed rat - found in north-east Argentina and Paraguay
Bibimys labiosus - Large-lipped crimson-nosed rat - south-east Brazil
Bibimys torresi - Torres's crimson-nosed rat - central Argentina

A extinct species Bibimys massoiai is known from Quaternary remains in northeastern Brazil.[2]

Presently, species of Bibimys are found in Argentina, Brazil and Paraguay.

As with most of the species in the South American Sigmodontinae, Bibimys has been arranged as a genus based mainly on morphological differences from the other living genera. Bibimys belongs to the tribe Scapteromyini, first informally described by P. Hershkovitz in 1966 and formally introduced later by E. Massoia in 1979. The scapteromyines are a small sigmodontine tribe, consisting of the three genera: Bibimys, Kunsia and Scapteromys. Many of the species have been described from badly preserved specimens.

One of the greatest challenges lying with sigmodontine systematics is that there is much confusion and disagreement amongst authors regarding the relationship between their tribes. There are some disagreements regarding the validity of the scapteromyines and of Bibimys as a genus. In a broad phylogenetic study, Smith and Patton found that the scapteromyine genera Kunsia and Scapteromys formed a clade closely related to the Akodontini.[3] In another study, D´Elia, Pardiñas and Myers have provisionally retained three species of Bibimys. Given the inadequacies of sample size and geographic representation, however, they acknowledged that morphological, karyotypic, and genetic evidence for their separation is unpersuasive.
References

Wilson, D. E.; Reeder, D. M., eds. (2005). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. ISBN 978-0-8018-8221-0. OCLC 62265494.
Simone B. das Neves; Ulyses F. J. Pardiñas; Patrícia Hadler; Elver L. Mayer; Ana M. Ribeiro (2020). "A new fossil cricetid (Rodentia, Sigmodontinae) from northeastern Brazil with remarks on small mammal extinctions in the tropical Quaternary". Journal of Mammalogy. 101 (4): 1133–1147. doi:10.1093/jmammal/gyaa066. S2CID 222001530.

Smith, M.F. and J.L. Patton, "Phylogenetic relationship and the radiation of sigmodontinae rodents in South America: Evidence from cytochrome b. Journal of Mammalian Evolution 6: 89-128 (1999)

Sources

David Macdonald (2001). The New Encyclopedia of Mammals. Oxford University Press. ISBN 0198508239.
Hershkovitz, P. "South American swamp and fossorial rats of the scapteromyine group (Cricetinae, Muridae) with comments to the glans penis in murid taxonomy. Zeitschrift für Säugetierkunde 31: 81-149. (1966)
Massoia, E. "Descripción de un género y especie nuevos: Bibimys torresi (Mammalia-Rodentia- Cricetidae-Sigmodontinae-Scapteromyni) Physis, C38: 1-7 (1979)