Aegialomys | |
---|---|
Aegialomys galapagoensis | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Mammalia |
Order: | Rodentia |
Family: | Cricetidae |
Subfamily: | Sigmodontinae |
Tribe: | Oryzomyini |
Genus: | Aegialomys Weksler et al., 2006 |
Type species | |
Oryzomys xantheolus Thomas 1894
| |
Species | |
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
[edit]- ^ 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 (3537). American Museum of Natural History: 1–29. doi:10.1206/0003-0082(2006)3537[1:TNGOOR]2.0.CO;2. hdl:2246/5815. S2CID 84088556.
Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction