Lesser Wilfred's mouse
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The lesser Wilfred's mouse (Juliomys pictipes) is a species of South American rodents of the family Cricetidae.[1] It was first described by Wilfred H. Osgood under the name Thomasomys pictipes, then into the genus Wilfredomys,[2] and now known as Juliomys pictipes.[3] The lesser Wilfred's mouse is endemic to northeastern Argentina, southeastern Brazil[4] and eastern Paraguay.[5] Its physical appearance ranges from dark brown to light orange coloration and the typical size is small to medium.[3] This species is arboreal, spending most of its time trees and living in the local forests at altitudes from sea level to Template:Cvt.[4] Currently, this species is listed as Least Concern by the IUCN, but, threats include livestock farming, ranching, and wood harvesting.[4]
Taxonomy
Juliomys pictipes was first discovered by Osgood in 1933.[6] It was originally named Thomasomys pictipes.[7][3] For several decades, the placement of this species was uncertain and fairly recently changed to Juliomys pictipes to fit under the subfamily of Sigmodontinae rodents.[1] Currently, there are four living species under the genus of Juliomys. The taxon identifier is 89132.[2]
Description
This animal is considered to be small to medium sized Sigmodontinae rodents.[1] They are dark-brown to light-orange brown.[4] Other characteristics include having long soft fur with a brownish ochraceous dorsum.[8] This small-bodied animal is a pentalophodont with a tail longer than its head and body.[9] Juliomys pictipes have short, broad feet with 6 plantar pads.[3] In addition, the skull has identifying features including having a short rostrum and rounded braincase.[1] Another diagnostic characteristic is the presence of an open slit in the suture between the frontal bones. Lastly, its karyotype has 2n = 36, FN = 34.[8]
Distribution and habitat
It is found in northeastern Argentina and southeastern Brazil and limited to the tropical and subtropical moist forests of those countries.[9] The type locality was first discovered in Misiones, Argentina and occurs in the Atlantic forest.[9]
Ecology
The species is arboreal.[4] A baby of this species is often called a pinkie, kitten or pup.[4] The females are called doe and males are called buck.[10] Groups of this species are called a nest, colony, harvest, horde or mischief.[10]
Status
The Lesser wilfred's mouse is listed as Least Concern.[4] But, threats that increase mortality or decrease quality of life include livestock farming, ranching, and wood harvesting.[4]
References
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