Animalia > Chordata > Mammalia > Primates > Hominoidea > Hylobatidae > Hylobates > Hylobates moloch

Hylobates moloch (silvery gibbon)

Synonyms: Hylobates lar pongoalsoni; Pithecus cinereus; Simia leucisca

Wikipedia Abstract

The silvery gibbon (Hylobates moloch) is a primate in the gibbon family, Hylobatidae. Its coat is bluish-grey in colour, with a dark grey or black cap. Like all gibbons, silvery gibbons lack external tails, have dorsally placed scapulae, and reduced flexibility in their lumbar regions. They have long, curved fingers and very long forelimbs relative to their hind limbs. On average, they reach 8 kg in weight.
View Wikipedia Record: Hylobates moloch

Endangered Species

Status: Endangered
View IUCN Record: Hylobates moloch

EDGE Analysis

Uniqueness Scale: Similiar (0) 
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
 Unique & Vulnerable (100)
ED Score: 5.1
EDGE Score: 3.89


Adult Weight [2]  13.69 lbs (6.21 kg)
Diet [3]  Carnivore (Invertebrates), Frugivore, Herbivore
Diet - Fruit [3]  70 %
Diet - Invertibrates [3]  10 %
Diet - Plants [3]  20 %
Forages - Arboreal [3]  100 %
Arboreal [1]  Yes
Gestation [2]  8 months 3 days
Litter Size [2]  1
Litters / Year [2]  0
Maximum Longevity [2]  45 years
Weaning [2]  1 year 11 months


Name Countries Ecozone Biome Species Report Climate Land
Western Java montane rain forests Indonesia Indo-Malayan Tropical and Subtropical Moist Broadleaf Forests
Western Java rain forests Indonesia Indo-Malayan Tropical and Subtropical Moist Broadleaf Forests

Protected Areas

Name IUCN Category Area acres Location Species Website Climate Land Use
Cibodas Biosphere Reserve (Gunung Gede-Pangrango) 142165 Java, Indonesia      
Ujung Kulon National Park II 313466 Java, Indonesia    

Biodiversity Hotspots

Name Location Endemic Species Website
Sundaland Brunei Darussalam, Indonesia, Malaysia, Singapore, Thailand Yes

Prey / Diet

Artocarpus elasticus (artocarpus)[4]
Castanopsis tungurrut[4]
Chilocarpus suaveolens[4]
Chisocheton patens[4]
Dacrycarpus kinabaluensis[4]
Dissochaeta velutina var. reticulata[4]
Dysoxylum mollissimum subsp. molle[4]
Engelhardia serrata[4]
Ficus altissima (false banyan)[5]
Ficus benjamina (weeping fig)[5]
Ficus callophylla[5]
Ficus callosa[5]
Ficus elastica (indian rubber fig)[5]
Ficus fistulosa[5]
Ficus grossularioides (Punjab fig)[4]
Ficus kerkhoveni[5]
Ficus padana[5]
Ficus ribes[4]
Ficus septica[4]
Ficus tinctoria (fig)[5]
Ficus tinctoria subsp. gibbosa[5]
Ficus virens[5]
Flacourtia rukam (rukam)[4]
Garcinia dulcis (Gourka)[4]
Garcinia parvifolia[4]
Glycyrrhiza glabra (Common Licorice)[4]
Knema cinerea[4]
Liquidambar excelsa[4]
Lithocarpus pseudomoluccus[4]
Macaranga rhizinoides[4]
Magnolia montana[4]
Medinilla eximia[4]
Melastoma malabathricum (Malabar melastome)[4]
Nageia wallichiana (Brown podocarp)[4]
Nyssa javanica[4]
Ostodes paniculata[4]
Platea latifolia[4]
Poikilospermum suaveolens[4]
Quercus gemelliflora[4]
Symplocos cochinchinensis[4]
Trema orientalis (oriental trema)[4]
Trevesia sundaica[4]

Prey / Diet Overlap

Competing SpeciesCommon Prey Count
Aceros cassidix (Knobbed Hornbill)4
Aceros corrugatus (Wrinkled Hornbill)2
Alophoixus bres (Grey-cheeked Bulbul)2
Alophoixus phaeocephalus (Yellow-bellied Bulbul)2
Anorrhinus galeritus (Bushy-crested Hornbill)3
Anorrhinus tickelli (Brown Hornbill)2
Anthracoceros albirostris (Oriental Pied Hornbill)3
Anthracoceros malayanus (Black Hornbill)4
Arctictis binturong (Binturong)2
Balionycteris maculata (spotted-winged fruit bat)2
Buceros bicornis (Great Hornbill)3
Buceros rhinoceros (Rhinoceros Hornbill)3
Callosciurus adamsi (ear-spot squirrel)2
Callosciurus finlaysonii (Finlayson's squirrel)2
Callosciurus notatus (plantain squirrel)2
Callosciurus prevostii (Prevost's squirrel)4
Calyptomena viridis (Green Broadbill)5
Chalcophaps indica (Common Emerald Dove)2
Chloropsis cochinchinensis (Blue-winged Leafbird)4
Chloropsis cyanopogon (Lesser Green Leafbird)3
Chloropsis sonnerati (Greater Green Leafbird)4
Cynopterus brachyotis (lesser short-nosed fruit bat)3
Cynopterus horsfieldii (Horsfield's fruit bat)2
Cynopterus sphinx (greater short-nosed fruit bat)4
Cynopterus titthaecheilus (Indonesian short-nosed fruit bat)3
Dicaeum chrysorrheum (Yellow-vented Flowerpecker)3
Dicaeum trigonostigma (Orange-bellied Flowerpecker)2
Ducula badia (Mountain Imperial Pigeon)3
Ducula bicolor (Pied Imperial Pigeon)2
Elephas maximus (Asiatic Elephant)2
Eudynamys scolopaceus (Asian Koel)2
Gracula religiosa (Hill Myna)5
Hylobates lar (white-handed gibbon)9
Iole olivacea (Buff-vented Bulbul)3
Irena puella (Asian Fairy-bluebird)5
Ixos malaccensis (Streaked Bulbul)3
Loriculus galgulus (Blue-crowned Hanging Parrot)3
Loriculus vernalis (Vernal Hanging Parrot)2
Macaca cyclopis (Taiwan macaque)5
Macaca fascicularis (long-tailed macaque)4
Macaca nemestrina (pigtail macaque)3
Macaca nigra (Celebes crested macaque)2
Macroglossus minimus (lesser long-tongued fruit bat)2
Macroglossus sobrinus (greater long-tongued fruit bat)2
Megalaima australis (Blue-eared Barbet)5
Megalaima chrysopogon (Golden-whiskered Barbet)4
Megalaima haemacephala (Coppersmith Barbet)2
Megalaima henricii (Yellow-crowned Barbet)2
Megalaima lineata (Lineated Barbet)2
Megalaima mystacophanos (Red-throated Barbet)5
Megalaima rafflesii (Red-crowned Barbet)4
Muntiacus muntjak (Indian muntjac)2
Oriolus chinensis (Black-naped Oriole)3
Oriolus xanthonotus (Dark-throated Oriole)2
Oriolus xanthornus (Black-hooded Oriole)2
Phalanger orientalis (Northern Common Cuscus)2
Pongo pygmaeus (orangutan)4
Presbytis comata (grizzled leaf monkey)26
Presbytis potenziani (Mentawai leaf monkey)2
Prionochilus maculatus (Yellow-breasted Flowerpecker)2
Prionochilus percussus (Crimson-breasted Flowerpecker)2
Prionochilus thoracicus (Scarlet-breasted Flowerpecker)2
Psittacula longicauda (Long-tailed Parakeet)2
Pycnonotus atriceps (Black-headed Bulbul)5
Pycnonotus brunneus (Asian Red-eyed Bulbul)5
Pycnonotus cyaniventris (Grey-bellied Bulbul)3
Pycnonotus eutilotus (Puff-backed Bulbul)3
Pycnonotus goiavier (Yellow-vented Bulbul)4
Pycnonotus jocosus (Red-whiskered Bulbul)2
Pycnonotus melanicterus (Black-crested Bulbul)3
Pycnonotus plumosus (Olive-winged Bulbul)2
Pycnonotus simplex (Cream-vented Bulbul)2
Pycnonotus squamatus (Scaly-breasted Bulbul)2
Ratufa bicolor (black giant squirrel)3
Rhinoplax vigil (Helmeted Hornbill)3
Rhyticeros undulatus (Wreathed Hornbill)4
Rousettus amplexicaudatus (Geoffroy's rousette)3
Rusa unicolor (sambar)2
Semnopithecus entellus (Hanuman langur)2
Symphalangus syndactylus (siamang)2
Trachypithecus auratus (Javan langur)25
Treron capellei (Large Green Pigeon)4
Treron curvirostra (Thick-billed Green Pigeon)5
Treron olax (Little Green Pigeon)2
Trichoglossus haematodus (Coconut Lorikeet)3
Tricholestes criniger (Hairy-backed Bulbul)2
Tupaia minor (Pygmy Treeshrew)2
Zosterops palpebrosus (Oriental White-eye)3


Parasitized by 
Dirofilaria magnilarvatum <Unverified Name>[6]

Institutions (Zoos, etc.)

Institution Infraspecies / Breed 
Assiniboine Park Zoo
City of Belfast Zoo
Fort Wayne Children's Zoo
Gibbon Conservation Center (GCC)
Howletts Wild Animal Park
Münchener Tierpark Hellabrunn
Mogo Zoo P/L
Perth Zoological Gardens
Port Lympne Wild Animal Park
Ragunan Zoological Park
Schmutzer Primate Centre, Ragunan Zoo
Taipei Zoo
Tbilisi Zoo
Zoo Melaka

Range Map

Southern Asia;



Attributes / relations provided by
1Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 2006. The Animal Diversity Web (online). Accessed February 01, 2010 at
2de Magalhaes, J. P., and Costa, J. (2009) A database of vertebrate longevity records and their relation to other life-history traits. Journal of Evolutionary Biology 22(8):1770-1774
3Hamish Wilman, Jonathan Belmaker, Jennifer Simpson, Carolina de la Rosa, Marcelo M. Rivadeneira, and Walter Jetz. 2014. EltonTraits 1.0: Species-level foraging attributes of the world's birds and mammals. Ecology 95:2027
4The Diversity of Plants as Feed Resources for the Java Gibbon (Hylobates moloch), Grizzled Langur (Presbytis cornata), and Silver Langur (Trachypithecus auratus) In Gunung Halimun National Park, Wartika Rosa Farida and Harun, Jurnal Primatologi Indonesia, Vol. 3, No. 2, Desember 2000, p.:55-61
5"Fig-eating by vertebrate frugivores: a global review", MIKE SHANAHAN, SAMSON SO, STEPHEN G. COMPTON and RICHARD CORLETT, Biol. Rev. (2001), 76, pp. 529–572
6Gibson, D. I., Bray, R. A., & Harris, E. A. (Compilers) (2005). Host-Parasite Database of the Natural History Museum, London
Ecoregions provided by World Wide Fund For Nature (WWF). WildFinder: Online database of species distributions, ver. 01.06 WWF WildFINDER
Biodiversity Hotspots provided by Critical Ecosystem Partnership Fund
Images provided by Google Image Search
Abstract provided by DBpedia licensed under a Creative Commons License
Weather provided by NOAA METAR Data Access