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Long-eared jerboa
Conservation status
Least Concern  (IUCN 3.1)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Rodentia
Family:	Dipodidae
Subfamily:	Euchoreutinae Lyon, 1901
Genus:	Euchoreutes W. L. Sclater, 1891
Species:	E. naso
Binomial name
Euchoreutes naso W. L. Sclater, 1891

The long-eared jerboa (Euchoreutes naso) is a nocturnal mouse-like rodent with a long tail, long hind legs for jumping, and exceptionally large ears. It is distinct enough that authorities consider it to be the only member of both its genus, Euchoreutes, and subfamily, Euchoreutinae.

Long-eared jerboas are found in the Palearctic ecozone. The specific palearctic ecozone areas they are found in are southernmost Mongolia to the Takla-Makan Desert, Mengxin, Aerijin Mountain, and Qing-Zang Plateau regions of north western China. Long-eared jerboas in most cases are nocturnal, The long-eared jerboa's fur according to the book 100 animals to see before they die "is reddish yellow to pale russet with white underparts." Very little is known about the species.

Description

The long-eared jerboa's head and body length measures 70 mm (2.8 in) to 90 mm (3.5 in) while its tail is double this size, between 150 mm (5.9 in) and 162 mm (6.4 in). Like its disproportionately long tail, its hind feet are also large, helping it to jump high, measuring between 40 mm (1.6 in) and 46 mm (1.8 in). It weighs 24 g (0.85 oz) to 38 g (1.3 oz). Long-eared jerboas usually eat insects. They use sound to locate and capture them by performing fast leaps into the air. According to animal diversity web "The two lateral digits are shorter than the three central ones. The central metatarsals are fused for a small distance. The feet are covered with tufts of bristly hairs. Long-eared jerboas have ears that are 1/3 longer than their heads. The incisors are thin and white. A small premolar can be found on each side of the upper jaw. Females have eight mammae." Their fur is light reddish/brown with a white underside. Their tails are covered in fine hairs the same color as their body and have a black and white tuft on the end.

Conservation

The long-eared jerboa was identified as one of the top-10 "focal species" in 2007 by the Evolutionarily Distinct and Globally Endangered (EDGE) project.

In 2007 Zoological Society of London EDGE of Existence Programme sent a researcher to study human impact on its environment. The study returned with video footage that has been noted as the "first time" the creature has been "recorded on camera". This has helped to start a campaign to protect them.

References

1. Batsaikhan, N.; Avirmed, D.; Tinnin, D. & Smith, A.T. (2008). "Euchoreutes naso". IUCN Red List of Threatened Species. 2008. Retrieved 17 March 2009.{{cite iucn}}: old-form url (help) Database entry includes a brief justification of why this species is of least concern
2. Holden, M.E.; Musser, G.G. (2005). "Family Dipodidae". 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. 886. ISBN 978-0-8018-8221-0. OCLC 62265494.
3. ^ Swanson, N.; Yahnke, C. (2007). "Euchoreutes naso". Animal Diversity Web. Retrieved 4 January 2012.
4. ^ Nick Garbutt; Mike Unwin (1 December 2007). 100 Animals to See Before They Die. Bradt Travel Guides. pp. 29–. ISBN 978-1-84162-236-1. Retrieved 4 January 2012.
5. "Protection for 'weirdest' species". BBC. 16 January 2007. Retrieved 22 May 2007.
6. Baillie, J. (10 December 2007). "First known footage of wild long-eared jerboas". Retrieved 31 March 2009.
7. Morelle, Rebecca (10 December 2007). "Mysterious mammal caught on film". BBC News. Retrieved 31 March 2009.

9. www.theanimalfiles.com

External links

• EDGE of Existence "(Long-eared jerboa)" Saving the World's most Evolutionarily Distinct and Globally Endangered (EDGE) species

v t e Myomorpha
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• IUCN Red List least concern species
• Mammals described in 1891
• Dipodidae
• EDGE species
• Mammals of Mongolia
• Rodents of China
• Taxa named by William Lutley Sclater