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Acomys dimidiatus

Superregnum: Eukaryota
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Cladus: Craniata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Cladus: Synapsida
Cladus: Eupelycosauria
Cladus: Sphenacodontia
Cladus: Sphenacodontoidea
Cladus: Theriodontia
Subordo: Cynodontia
Cladus: Mammaliaformes
Classis: Mammalia
Subclassis: Trechnotheria
Infraclassis: Zatheria
Supercohort: Theria
Cohort: Eutheria
Cohort: Placentalia
Cladus: Boreoeutheria
Superordo: Euarchontoglires
Ordo: Rodentia
Subordo: Myomorpha
Superfamilia: Muroidea

Familia: Muridae
Subfamilia: Deomyinae
Genus: Acomys
Species: Acomys dimidiatus

Acomys dimidiatus Cretzschmar, 1826

Type locality: Egypt, Sinai.


Acomys dimidiatus carmeliensis Haas, 1952


Philipp Jakob Cretzschmar 1826: in Rüppell, Atlas zu der Reise im nördlichen Afrika. 37: taf. 13, fig. a.

Vernacular names
English: Eastern Spiny Mouse

The eastern spiny mouse or Arabian spiny mouse (Acomys dimidiatus) is a species of rodent in the family Muridae.[2] They have a wide range, having been found in Middle Eastern deserts, as well as being prevalent in riverine forests in Africa. This is the only species of spiny mouse which may have black coloration.[3] Their diet is similar to other species of spiny mouse, consisting mostly of seeds.[4]


The eastern spiny mouse is a small rodent with a head-and-body length of up to 17.5 cm (7 in) and a tail of up to 12.5 cm (5 in), and a maximum weight of about 90 g (3.2 oz). The fur feels coarse when rubbed against the lie of the hairs, each individual hair being dark tan with a greyish tip. The tail appears naked but is in fact clad with short bristles.[5]

This mouse has a wide distribution in the Middle East, its range extending from the Sinai Peninsula, through Lebanon, Syria, Jordan and Israel, to the Arabian Peninsula, southern Iraq, southern Iran and southern Pakistan. It occurs in semi-arid or arid regions, in dry forests, scrubby and rocky areas at altitudes of up to 1,200 m (3,900 ft). It can be present in agricultural land and sometimes invades houses.[1]

The species is nocturnal, avoiding the heat of the day and foraging at night for seeds, and sometimes insects and grasses. It is a sociable animal and lives in small groups. Females become mature at about two months of age and can produce litters of up to five young after a gestation period of about 42 days. Another female in the family group may help with care of the young, which are weaned after about a fortnight.[5]

Its spiny hair may help to prevent predation, perhaps making the animal harder to swallow, and this mouse is also capable of shedding its tail in order to escape from a predator.[5] In captivity, this mouse can live for five years, but three years may be a more realistic life expectancy in the wild.[5]

The eastern spiny mouse is common throughout most of its range. It is adaptable and no particular threats have been identified, so the International Union for Conservation of Nature has listed its conservation status as being of "least concern".[1]

Amr, Z.; Shenbrot, G.; Molur, S. (2008). "Acomys dimidiatus". IUCN Red List of Threatened Species. 2008. Retrieved 16 August 2016.
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. 1196. ISBN 978-0-8018-8221-0. OCLC 62265494.
Atallah, Sana I. (May 1967). "A New Species of Spiny Mouse (Acomys) from Jordan". Journal of Mammalogy. Journal of Mammalogy, Vol. 48, No. 2. 48 (2): 258–261. doi:10.2307/1378029. JSTOR 1378029.
Varty, Nigel (May 1990). "Ecology of the Small Mammals in the Riverine Forests of the Jubba Valley, Southern Somalia". Journal of Tropical Ecology. 6 (2): 179–189. doi:10.1017/S0266467400004272.
"Arabian spiny mouse". ARKive. Archived from the original on 2016-10-09. Retrieved 12 August 2016.

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