Superregnum: Eukaryota
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Cladus: Craniata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Cladus: Synapsida
Cladus: Eupelycosauria
Cladus: Sphenacodontia
Cladus: Sphenacodontoidea
OrdoTherapsida
Cladus: Theriodontia
Subordo: Cynodontia
Cladus: Mammaliaformes
Classis: Mammalia
Subclassis: Trechnotheria
Infraclassis: Zatheria
Supercohort: Theria
Cohort: Eutheria
Cohort: Placentalia
Cladus: Boreoeutheria
Superordo: Euarchontoglires
Ordo: Rodentia
Subordo: Myomorpha
Superfamilia: Muroidea
Familia: Cricetidae
Subfamilia: Sigmodontinae
Tribe: Oryzomyini
Genus: Aegialomys
Species: A. galapagoensis – A. xanthaeolus
Name
Aegialomys Weksler, Percequillo & Voss, 2006: 5
Type species: Oryzomys xanthaeolus Thomas, 1894, by original designation.
References
Primary references
Weksler, M., Percequillo & Voss, R.S. 2006. Ten new genera of oryzomyine rodents (Cricetidae: Sigmodontinae). American Museum Novitates 3537: 1–29. DOI: 10.1206/0003-0082(2006)3537[1:TNGOOR]2.0.CO;2 Paywall; hdl: 2246/5815 Open access Reference page.
Additional references
Percequillo, A.R. 2015. Genus Aegialomys Weksler, Percequillo, and Voss, 2006. Pp. 293-298 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.
Prado, J.R.D. & Percequillo, A.R. 2016. Systematic studies of the genus Aegialomys Weksler, Percequillo and Voss, 2006 (Rodentia: Cricetidae: Sigmodontinae): Annotated catalogue of the types of the species-group taxa. Zootaxa 4144(4): 477–498. DOI: 10.11646/zootaxa.4144.4.2. Reference page.
Aegialomys is a genus of oryzomyine rodents from the lowlands and mountains of western Peru and Ecuador, including the Galápagos Islands. The species in this genus have historically been placed in Oryzomys, but according to cladistic research, the genus is more closely related to a group containing, among others, Nectomys and Sigmodontomys, than to Oryzomys. The generic name Aegialomys means "coastal mouse" in Ancient Greek (αιγιαλός "coast" and μῦς "mouse") and references the mostly coastal occurrence of the genus.
Aegialomys species have a greyish to buff dorsal pelage which is divided sharply from the white to light yellow ventral pelage. They have relatively short ears. There are crowns of hair at the bases of the toes. The tail is equal to or longer than the body and is darker above than below.
There are two commonly recognized and described species in the genus: the mainland A. xanthaeolus, the type species, and A. galapagoensis. There is however a third, undescribed species occurring on the Ecuadorian coast and the status of the two possible junior synonyms of A. xanthaeolus, A. ica Osgood, 1944 and A. baroni J.A. Allen, 1897, is currently[when?] unresolved, although they have been described as distinct species,[1] as has the subspecies A. galapagoensis bauri.
References
Prado, J.R.; Percequillo, A.R. (October 2019). "Aegialomys galapagoensis (Rodentia: Cricetidae)". Mammalian Species. 51 (981): 92–99. doi:10.1093/mspecies/sez013.
Weksler, M.; Percequillo, A. R.; Voss, R. S. (2006-10-19). "Ten new genera of oryzomyine rodents (Cricetidae: Sigmodontinae)". American Museum Novitates. American Museum of Natural History. 3537: 1–29. doi:10.1206/0003-0082(2006)3537[1:TNGOOR]2.0.CO;2. hdl:2246/5815.
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