Lesser Wilfred's mouse

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Lesser Wilfred's mouse
Scientific classification OOjs UI icon edit-ltr.svg
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. [2] It was first described by Wilfred H. Osgood under the name Thomasomys pictipes, then into the genus Wilfredomys, [3] and now known as Juliomys pictipes. [4] The lesser Wilfred's mouse is endemic to northeastern Argentina, southeastern Brazil [1] and eastern Paraguay. [5] Its physical appearance ranges from dark brown to light orange coloration and the typical size is small to medium. [4] This species is arboreal, spending most of its time trees and living in the local forests at altitudes from sea level to 2,000 m (6,560 ft). [1] Currently, this species is listed as Least Concern by the IUCN, but, threats include livestock farming, ranching, and wood harvesting. [1]

Contents

Taxonomy

Juliomys pictipes was first discovered by Osgood in 1933. [6] It was originally named Thomasomys pictipes. [7] [4] 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. [2] Currently, there are four living species under the genus of Juliomys . The taxon identifier is 89132. [3]

Description

This animal is considered to be small to medium sized Sigmodontinae rodents. [2] They are dark-brown to light-orange brown. [1] 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. [4] In addition, the skull has identifying features including having a short rostrum and rounded braincase. [2] 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. [1] A baby of this species is often called a pinkie, kitten or pup. [1] 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. [1] But, threats that increase mortality or decrease quality of life include livestock farming, ranching, and wood harvesting. [1]

References

  1. 1 2 3 4 5 6 7 8 9 Geise, L.; Pardinas, U. (2017) [errata version of 2016 assessment]. "Juliomys pictipes". IUCN Red List of Threatened Species . 2016: e.T23078A115167037. doi: 10.2305/IUCN.UK.2016-3.RLTS.T23078A22330515.en . Retrieved 22 September 2019.
  2. 1 2 3 4 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. 1 2 "Wilfredomys pictipes (lesser Wilfred's mouse)". www.uniprot.org. Retrieved 2019-09-30.
  4. 1 2 3 4 Beolens, Bo. (2009). The eponym dictionary of mammals. Watkins, Michael, 1940-, Grayson, Michael. Baltimore: Johns Hopkins University Press. ISBN   9780801895333. OCLC   593239356.
  5. ↑ de la Sancha; D’Elı´a; Neto; Perez; Salazar-Bravo (2009). "Discovery of Juliomys (Rodentia, Sigmodontinae) in Paraguay, a new genus of Sigmodontinae for the country's Atlantic Forest". Mammalia. 7: 162–167. doi:10.1515/MAMM.2009.026.
  6. ↑ 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.
  7. ↑ 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.
  8. 1 2 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. 1 2 3 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. 1 2 "Lesser Wilfred's mouse | Wilfredomys pictipes facts". thewebsiteofeverything.com. Retrieved 2019-09-30.
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