Necromys

Necromys (often performed as Bolomys ) is a living in South America rodent genus of the group of the New world. It is closely related to the South American field mice ( Akodon ) and are sometimes classified as the subgenus. The genus includes nine species.

These rodents are small, mouse -like animals. They reach a body length 9-13 inches, added a 6 ​​to 9 inches long cock. The weight is around 20 to 50 grams. Their fur is light brown in color, the back is a little darker and the belly lighter. The paws are broad and show adaptations to grave lifestyle.

These animals of this genus are used in various regions of South America. They inhabit the Andes, the Altiplano, the Gran Chaco and the Brazilian lowlands. The way of life is only one of a kind, Necromys Lasiurus, better known. This species is nocturnal and lives in underground, self-dug Building. They are omnivorous, taking both insects and vegetable matter to him. Several times a year the female gives birth after a 21 - to 23-day gestation period around 3-6 cubs themselves.

System

We distinguish nine types:

• Necromys amoenus lives in the Altiplano of Peru and Bolivia.
• Necromys benefactus is known from isolated regions in northern Argentina.
• Necromys lactens inhabited highlands of Bolivia and Argentina.
• Necromys Lasiurus lives in Brazil, Peru and Argentina. The exact distribution limits are unknown.
• Necromys lenguarum is located in the Gran Chaco of Bolivia, Paraguay and northern Argentina.
• Necromys obscurus inhabited Uruguay and Ostargentinien.
• Necromys punctulatus is known from Ecuador and Colombia. The exact distribution is unclear.
• Necromys temchuki lives in northeastern Argentina.
• Necromys urichi is distributed from Venezuela to northern Brazil and is also found on the island of Trinidad.

The two species N. obscurus and N. temchuki are sometimes listed in a separate genus, Cabreramys. The genus name is derived from an extinct animal Necromys, Necromys conifer, which was described by Florentino Ameghino 1889 and lived in northern Argentina. The genus name comes from Bolomys Oldfield Thomas in 1916 and was applied to the extant representatives. Since the genera are identical, according to ICZN must be used for the animals of the older name, so Necromys.