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Lesser Wilfred's mouse

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Species of rodent

Lesser Wilfred's mouse
Conservation status

Least Concern  (IUCN 3.1)
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Rodentia
Family: Cricetidae
Subfamily: Sigmodontinae
Genus: Juliomys
Species: J. pictipes
Binomial name
Juliomys pictipes
Osgood, 1933
Synonyms

Thomasomys pictipes
Wilfredomys pictipes

The lesser Wilfred's mouse (Juliomys pictipes) is a species of South American rodents of the family Cricetidae. It was first described by Wilfred H. Osgood under the name Thomasomys pictipes, then into the genus Wilfredomys, and now known as Juliomys pictipes. The lesser Wilfred's mouse is endemic to northeastern Argentina and southeastern Brazil. Its physical appearance ranges from dark brown to light orange coloration and the typical size is small to medium. This species is arboreal, spending most of its time trees and living in the local forests at altitudes from sea level to 2000 m. Currently, this species is listed as Least Concern by the IUCN, but, threats include livestock farming, ranching, and wood harvesting.

Taxonomy

Juliomys pictipes was first discovered by Osgood in 1933. It was originally named Thomasomys pictipes. 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. Currently, there are three species under the genus of Juliomys. The taxon identifier is 89132.

Description

This animal is considered to be small to medium sized Sigmodontinae rodents. They are dark-brown to light-orange brown. Other characteristics include having long soft fur with a brownish ochraceous dorsum. This small-bodied animal is a pentalophodont with a tail longer than its head and body. Juliomys pictipes have short, broad feet with 6 plantar pads. In addition, the skull has identifying features including having a short rostrum and rounded braincase. 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.

Distribution and habitat

It is found in northeastern Argentina and southeastern Brazil and limited to the tropical and subtropical moist forests of those countries. The type locality was first discovered in Misiones, Argentina and occurs in the Atlantic forest.

Ecology

The species is arboreal. A baby of this species is often called a pinkie, kitten or pup. The females are called doe and males are called buck. Groups of this species are called a nest, colony, harvest, horde or mischief.

Status

The Lesser wilfred's mouse is listed as Least Concern. But, threats that increase mortality or decrease quality of life include livestock farming, ranching, and wood harvesting.

References

  1. ^ Geise, L. & Pardinas, U. (2008). "Juliomys pictipes". IUCN Red List of Threatened Species. 2008. Retrieved 23 March 2011.{{cite iucn}}: old-form url (help)
  2. ^ Pardiñas, Ulyses F. J.; Teta, Pablo; D’elía, Guillermo; Galliari, Carlos (2008-04-28). "Rediscovery of Juliomys pictipes (Rodentia: Cricetidae) in Argentina: emended diagnosis, geographic distribution, and insights on genetic structure". Zootaxa. 1758 (1): 29–44. doi:10.11646/zootaxa.1758.1.2. ISSN 1175-5334.
  3. ^ Beolens, Bo. (2009). The eponym dictionary of mammals. Watkins, Michael, 1940-, Grayson, Michael. Baltimore: Johns Hopkins University Press. ISBN 9780801895333. OCLC 593239356.
  4. ^ "The IUCN Red List of Threatened Species". IUCN Red List of Threatened Species. Retrieved 2019-09-22.
  5. Paresque, Roberta; Christoff, Alexandre Uarth; Fagundes, Valéria (2009). "Karyology of the Atlantic forest rodent Juliomys (Cricetidae): a new karyotype from southern Brazil". Genetics and Molecular Biology. 32 (2): 301–305. doi:10.1590/S1415-47572009005000031. ISSN 1415-4757. PMC 3036929. PMID 21637684.
  6. de Oliveira, Joao A.; Bonvicino, Cibele R. (2002-09-01). "A new species of sigmodontine rodent from the Atlantic forest of eastern Brazil". Acta Theriologica. 47 (3): 307–322. doi:10.1007/BF03194149. ISSN 2190-3743. S2CID 34916706.
  7. ^ "The IUCN Red List of Threatened Species". IUCN Red List of Threatened Species. Retrieved 2019-11-19.
  8. ^ Musser, G. G.; Carleton, M. D. (2005). "Superfamily Muroidea". In Wilson, D. E.; Reeder, D. M. (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. p. 1121. ISBN 978-0-8018-8221-0. OCLC 62265494.
  9. ^ Tomasi, Paulo S.; Valiati, Victor H.; Gonçalves, Juliana W.; Oliveira, Larissa R.; Vieira, Emerson M.; Christoff, Alexandre U. (2016-09-27). "A new species of Juliomys (Rodentia, Cricetidae, Sigmodontinae) from the Atlantic Forest of Southern Brazil". Journal of Mammalogy. 97 (5): 1469–1482. doi:10.1093/jmammal/gyw082. ISSN 0022-2372.
  10. "Wilfredomys pictipes (lesser Wilfred's mouse)". www.uniprot.org. Retrieved 2019-09-30.
  11. ^ "Lesser Wilfred's mouse | Wilfredomys pictipes facts". thewebsiteofeverything.com. Retrieved 2019-09-30.
Taxon identifiers
Juliomys pictipes
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