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The 'Sigmodontinae' is one of the most diverse groups of mammals. It includes at least 376 species. Many authorities include the Neotominae and Tylomyinae as part of a larger definition of Sigmodontinae. When those genera are included, the species count numbers at least 508. They are distributed throughout the New World, but are predominantly South American. The sigmodontines inhabit many of the same ecological niches that the Murinae inhabit in the Old World.
The "Thomasomyini" from the Atlantic Forest of Brazil are generally thought to be not especially related to the "real" Thomasomyini from the northern Andes and Amazonia. The genera ''Wiedomys'' and ''Sigmodon'' are generally placed in their own tribe, and the "phyllotines" ''Irenomys'', ''Punomys'', ''Euneomys'', and ''Reithrodon'' are considered ''incertae sedis''.
The Sigmodontinae are divided into a number of tribes and genera:

★ Subfamily Sigmodontinae

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★ Tribe Sigmodontini

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★ ''Sigmodon'' - Cotton Rats

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★ Tribe Ichthyomyini

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★ ''Anotomys'' - Ecuadorian Fish-eating Rat

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★ ''Chibchanomys'' - Chibchan Water Mouse

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★ ''Ichthyomys'' - Crab-eating Rats

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★ ''Neusticomys'' - Fish-eating Rats

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★ ''Rheomys'' - Water Mice

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★ Oryzomyalia

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★ Tribe Oryzomyini

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★ ''Holochilus'' - Marsh Rats

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★ ''Megalomys'' - Giant Rice Rats

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★ ''Melanomys'' - Dark Rice Rats

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★ ''Microryzomys'' - Small Rice Rats

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★ ''Nectomys'' - Water Rats

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★ ''Nesoryzomys'' - Galapagos Mice

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★ ''Oecomys'' - Arboreal Rice Rats

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★ ''Oligoryzomys'' - Pygmy Rice Rats

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★ ''Oryzomys'' - Rice Rats

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★ ''Pseudoryzomys'' - False Rice Rats

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★ ''Scolomys''- New World Spiny Mice

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★ ''Sigmodontomys'' - Rice Water Rats

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★ ''Zygodontomys'' - Cane Mice

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★ ''Amphinectomys''

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★ ''Neacomys''

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★ ''Lundomys''

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★ ''Microakodontomys''

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★ ''Handleyomys''

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★ ''Noronhomys''†

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★ Tribe Thomasomyini

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★ ''Aepeomys'' - Montane Mice

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★ ''Chilomys'' - Columbian Forest Mouse

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★ ''Delomys'' - Atlantic Forest Rats

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★ ''Phaenomys'' - Rio de Janeiro Arboreal Rat

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★ ''Rhagomys'' - Brazilian Arboreal Mouse

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★ ''Rhipidomys'' - Climbing Mice

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★ ''Thomasomys'' - Olfield Mice

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★ ''Wilfredomys'' - Wilfred's Mice

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★ ''Abrawayaomys''

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★ Tribe Wiedomyini

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★ ''Wiedomys'' - Red-nosed Mouse

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★ ''Cholomys''†

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★ Tribe Akodontini

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★ ''Akodon'' - South American Grass Mice

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★ ''Bibimys'' - Crimson-nosed Rats

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★ ''Blarinomys'' - Brazilian Shrew-Mouse

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★ ''Chelemys'' - Long-clawed Mice

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★ ''Geoxus'' - Long-clawed Mole Mouse

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★ ''Juscelinomys'' - Burrowing Mice

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★ ''Kunsia'' - Giant Rats

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★ ''Lenoxus'' - Andean Rat

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★ ''Notiomys'' - Edward's Long-clawed Mouse

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★ ''Oxymycterus'' - Hocicudos

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★ ''Podoxymys'' - Roraima Mouse

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★ ''Scapteromys'' - Swamp Rat

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★ ''Thalpomys'' - Carrado Mice

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★ ''Necromys''

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★ ''Thaptomys''

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★ ''Deltamys''

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★ ''Abrothrix''

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★ ''Pearsonomys''

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★ ''Brucepattersonius''

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★ Tribe Phyllotini

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★ ''Andalgalomys'' - Chaco Mice

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★ ''Andinomys'' - Andean Mouse

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★ ''Auliscomys'' - Big-Eared Mice

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★ ''Calomys'' - Vesper Mice

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★ ''Chinchillula'' - Altiplano Chinchilla Mouse

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★ ''Eligmodontia'' - Silky Desert Mice

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★ ''Galenomys'' - Garlepp's Mouse

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★ ''Graomys''

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★ ''Irenomys'' - Chilean Climbing Mouse

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★ ''Phyllotis'' - Leaf-Eared Mice

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★ ''Euneomys'' - Chinchilla Mice

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★ ''Neotomys'' - Andean Swamp Rat

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★ ''Punomys'' - Puna Mouse

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★ ''Reithrodon'' - Bunny Rat

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★ ''Salinomys''

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★ ''Loxodontomys''

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★ ''Tapecomys''

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★ ''Ichthyurodon''†

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★ ''Olympicomys''†

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★ ''Tafimys''†

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★ ''Incertae sedis''

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★ ''Juliomys''

Contents

References

See also

References

★ D'Elía, G., L. Luna, E. M. González, B. D. Patterson. 2005. On the Sigmodontinae radiation (Rodentia, Cricetidae): An appraisal of the phylogenetic position of ''Rhagomys''. Molecular Phylogenetics and Evolution.

See also

★ New World rats and mice