- Javan Lutung
Taxobox
name = Javan LutungMSW3 Groves|pages=175]
image_width = 225px
status = VU
trend = unknown
status_system = iucn3.1
status_ref = [IUCN2006|assessors=Eudey "et al"|year=2000|id=22034|title=Trachypithecus auratus|downloaded=11 May 2006 Listed as Vulnerable (VU B1+2ab v2.3) ]
regnum =Animal ia
phylum =Chordata
classis =Mammal ia
ordo =Primate s
familia =Cercopithecidae
genus = "Trachypithecus "
species_group = "T. cristatus"
species = "T. auratus"
binomial = "Trachypithecus auratus"
binomial_authority = É. Geoffroy, 1812The Javan Lutung, "Trachypithecus auratus" also known as the Ebony Lutung and Javan Langur, is anOld World monkey from theColobinae subfamily. It is most commonly glossy black with a brownish tinge to its legs, sides, and "sideburns".cite web|title=Primate Fact Sheets|accessdate=January 2004|date=October 15, 2003|url=http://members.tripod.com/uakari/trachypithecus_auratus.html] It is found on and endemic to the island of Java, as well as on several of the surroundingIndonesia n islands. TheLatin word "auratus" in itsscientific name means "golden", and refers to a less common color variant. Note that the common nameGolden Langur is used for a different species.Like all
langur s, this species' tail is noticeably long, measuring up to 87 cm in length while the body is only around 55 cm long.cite book|last=Macdonald|first=D.|year=2001|title=The New Encyclopedia of Mammals|publisher=Oxford University Press|location=Oxford] The two subspecies of thislutung are fairly similar in appearance and are geographically separated; males and females are both usually glossy black, although the females pale, yellowish white patch around the pubic area. Juveniles of both subspecies are orange in color.cite book|last=Rowe|first=N.|year=1996|title=The Pictorial Guide to the living Primates|publisher=Pogonias Press|location=East Hampton, New York] The nominate subspecies "Trachypithecus auratus auratus" has a rare race that does not lose its juvenile coloration when it matures, instead the coloration darkens slightly, with yellow tinges on its sides, limbs, and around its ears, and a black tinge on its back.The Javan Lutung inhabits the interior and peripheral areas of rainforests.
This
primate is diurnal andarboreal . Its diet is primarilyherbivorous , eating leaves, fruit, flowers, and flower buds, although it also eats insect larvae. As with othercolobine s, it has evolved a specialised stomach to digest plant material more efficiently. This species also has enlargedsalivary gland s to assist it in breaking down food.Like other
langur s, the Javan Lutung is asocial animal , living in groups of around seven individuals, with one or two adult males in the group. Although they will look after offspring of other mothers as well as their own, adult females are aggressive towards females from other groups. The brighter coloring of juveniles may alert females to their presence and ensures that they will always be noticed and protected. This species has no discernible mating season and females produce one offspring at a time.Subspecies:
* Spangled Ebony orEastern Javan Lutung , "Trachypithecus auratus auratus"
*Western Javan Lutung , "Trachypithecus auratus mauritiusGallery
References
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