The Zoochat Photographic Guide to Old World Primates

The species at Gir is the Southern Plains Langur. The names are a little confusing, because both Northern and Southern Plains Langurs are found in the north of India, just in different parts of the north.

 

Trachypithecus
About twenty-one species, all but one of which are represented in the Zoochat galleries.


The taxonomy of this genus has constantly changed over the years, with many of the now-universally-accepted species having formerly been lumped together. There has also been dispute over the divisions of species between the genera Trachypithecus and Presbytis. The current taxonomic position based on genetics is that Trachypithecus and Semnopithecus are a sister group, while Presbytis is more closely related to the snub-nosed colobines (Pygathrix, Rhinopithecus, etc). Two species, the Nilgiri Langur and the Purple-faced Langur, have traditionally been placed in Trachypithecus but genetic studies show they are most closely related to the "grey langurs" of India and therefore I have placed them under Semnopithecus in this thread.


As a group the common collective names in use for Trachypithecus species are "langur", "leaf monkey", and "lutung". They can all be used interchangeably.


Because there are a lot of species in this genus and almost all of them are represented in the Zoochat galleries, I have divided them over four posts. The first post covers the "cristatus group" (Javan and silvered langurs). The second post covers the "obscurus group". The third post covers the "pileatus group". The fourth post covers the so-called "limestone langurs" or "francoisi group".

 

Trachypithecus - "cristatus group"


Ebony or Javan Langur Trachypithecus auratus
Two subspecies: auratus and mauritius.

The two subspecies have been proposed to be split into two full species, which seems unnecessary. There is a paper here on the differences between the two subspecies: IDENTIFICATION OF JAVAN LANGUR ( Trachypithecus auratus ) IN JAVAN LANGUR CENTER (JLC) COBAN TALUN-BATU BASED ON D-LOOP SEQUENCES | Rizkyani | KnE Life Sciences


Endemic to the Indonesian islands of Java and Bali, with auratus in eastern Java and Bali, and mauritius in western Java.


Photo by @Chris79 at Howletts Wild Animal Park, UK (subspecies auratus). This subspecies has two colour forms, as shown well in this photo. The western subspecies has only the black form.


Javan Langurs, Howletts, 14 March 09 | ZooChat


Photo by @Chlidonias in the wild, Indonesia (subspecies mauritius).


Javan langur (Trachypithecus auratus mauritius) | ZooChat


Sundaic Silvered Langur Trachypithecus cristatus
Two subspecies: cristatus and vigilans.


The population along the coast of Peninsular Malaysia has been split recently as a full species, T. selangoriensis. The split doesn't appear to have gained wide acceptance, but I have dealt with it separately nonetheless. (I will note that it isn't a split I follow in my own species lists). Otherwise this population has simply been included within the nominate subspecies cristatus of Borneo and Sumatra. The subspecies vigilans (not depicted in the Zoochat galleries) is restricted to the Natuna Islands.


Photo by @Chlidonias in the wild, Sarawak (Malaysia) (subspecies cristatus).


Silvered Leaf Monkey (Trachypithecus cristatus) | ZooChat


Indochinese Silvered Langur Trachypithecus germaini
Monotypic, although some recognise a subspecies caudalis.

Formerly included in a lumped T. cristatus (that species now restricted to the Sunda region). The Annamese Silvered Langur T. margarita was later split from T. germaini.

The subspecies caudalis was described from zoo animals of unknown origin, initially suggested as probably being from Cambodia or southwest Vietnam, but this has somehow become "north Vietnam", which is well outside the range of T. germaini. Some museum specimens are labelled as being from Thailand. It is best considered invalid.


Found across southern Thailand (and the small area of Burma to the west) and patchily through Cambodia to southern Laos and the southeast corner of Vietnam. They are separated from T. margarita by the Mekong River.


Photo of adult and baby by @Himimomi at Nanning Zoo, China.


Indo-Chinese silver langur - ZooChat


Annamese Silvered Langur Trachypithecus margarita
Monotypic.


Found almost solely in Vietnam, only just edging into eastern Cambodia and southeastern Laos. They are separated from T. germaini (from which they were split) by the Mekong River.


Photo by @robreintjes at Saigon Zoo, Vietnam.


Annamese Silvered Langur | ZooChat


Selangor Silvered Langur Trachypithecus selangoriensis
Monotypic.

Recently split from the Sundaic Silvered Langur T. cristatus, a move which doesn't seem to have been followed by many authorities. Typically it is retained within the nominate subspecies T. cristatus cristatus.


Restricted to the western coastal regions of Peninsular Malaysia.


Photo of female and young by @Chlidonias in the wild, Peninsular Malaysia.


silvered langurs (Trachypithecus cristatus) | ZooChat

 

Trachypithecus - "obscurus group"



Tenasserim Langur Trachypithecus barbei
Monotypic.


Found in a very small area in southern Burma and neighbouring west Thailand.


Photo by @GregOz at Dusit Zoo, Thailand. Note that the animals kept and bred at Dusit Zoo (and those at several other zoos in Thailand) have always been labelled as Phayre's Langurs T. phayrei, but they were re-identified some time ago as Tenasserim Langurs. They don't actually look like the Thai subspecies of Phayre's Langurs (which themselves are now split as a separate species, the Indochinese Grey Langur T. crepusculus). However many of the photos in the Dusit Zoo gallery are therefore titled as being Phayre's Langurs.


Phayre's Langur - Trachypithecus phayrei - Dusit Zoo 2014 | ZooChat


Indochinese Grey Langur Trachypithecus crepusculus
Monotypic.

Formerly treated as a subspecies of the Phayre's Langur T. phayrei, and hence sometimes also known as the Southern Phayre's Langur. Genetics suggest that crepusculus is a species of hybrid origin (see The Hybrid Origin of the Indochinese Gray Langur Trachypithecus crepusculus).


Found across Indochina, from eastern Burma and southern China, across northern Thailand and Laos to north Vietnam.


Photo by @Giant Eland at the Endangered Primate Rescue Centre, Vietnam.


Indochinese gray langur (Trachypitheucs crepusculus) | ZooChat


Shan State Langur Trachypithecus melamera
Monotypic.

This species was split in 2020 from the Phayre's Langur T. phayrei, previously being the subspecies T. p. shanicus (the name melamera is senior to shanicus, hence the name-change).


Found in eastern Burma and extreme southwest China.


Photo by @Chlidonias at Yadanabon Zoo, Burma.


Shan State Langur (Trachypithecus melamera) - ZooChat


Dusky or Spectacled Langur Trachypithecus obscurus
Seven subspecies: carbo, flavicauda, halonifer, obscurus, sanctorum, seimundi, styx. Most of these subspecies are restricted to islands off the mainland of Malaysia and Thailand. There has been a suggestion that the Dusky Langur is actually two species, with the island populations being the remnants of an older species displaced on the mainland by a more recent arrival.


Found in the Thai-Malay Peninsula, from southern Burma and Thailand down throughout Peninsular Malaysia: carbo on Langkawi Island; flavicauda in the Thai peninsula; halonifer on Penang Island; obscurus in Peninsular Malaysia as far north as Perlis; sanctorum in Burma; seimundi on Phangan Island; and styx on Perhentian Island.


Photo by @GregOz in the wild, Peninsular Malaysia (Langkawi Island subspecies carbo).


Dusky Langur - Trachypithecus obscurus - Langkawi 2009 | ZooChat


Photo by @Deer Forest in the wild, Thailand (Thailand subspecies flavicauda).


dusky langur | ZooChat


Photo by @Chlidonias in the wild, Peninsular Malaysia (Penang Island subspecies halonifer).


Dusky Langur (Trachypithecus obscurus) | ZooChat


Photo by @Chlidonias in the wild, Peninsular Malaysia (mainland Malaysian subspecies obscurus).


Dusky Langur (Trachypithecus obscurus) - ZooChat


Phayre's Langur Trachypithecus phayrei
Monotypic.

In 2020 the Phayre's Langur was split into three species (see Mitogenomic phylogeny of the Asian colobine genus <i>Trachypithecus</i> with special focus on <i>Trachypithecus phayrei</i> (Blyth, 1847) and description of a new species). The western taxon in northeastern India, Bangladesh, and western Burma (previously treated as the nominate subspecies phayrei) retained the name T. phayrei. The animals in central Burma were described as a new species, T. popa (formerly included within T. p. phayrei). The population in eastern Burma and extreme southwest China (the former subspecies T. p. shanicus) was renamed as a full species, T. melamera. The paper estimated divergence time for the species at about a million years.

Apart for the photo below, all those in the Zoochat galleries labelled as being this species are either the eastern form which is now split as T. melamera; the Indochinese Grey Langur T. crepusculus, which was formerly treated as a subspecies of T. phayrei; or in the case of photos from Dusit Zoo depicting Tenasserim Langurs T. barbei which were formerly misidentified by the zoo as being Phayre's Langurs.


Found in northeastern India, Bangladesh, and western Burma.


Photo by @Junklekitteb at Bannerghatta Biological Park (India).


Phayre’s Langur (Trachypithecus phayrei) - ZooChat


Popa Langur Trachypithecus popa
Monotypic.

Described as a new species in 2020, formerly included within the Phayre's Langur subspecies T. phayrei phayrei.


Endemic to central Burma, now restricted to the area of Mt Popa.


This species is not represented in the Zoochat galleries.

 

Trachypithecus - "pileatus group"



Golden Langur Trachypithecus geei
Two subspecies: bhutanensis and geei.

Originally treated as a subspecies of the Capped Langur Trachypithecus pileatus.


Endemic to a very small area, with bhutanensis being found in northern Bhutan and geei in southern Bhutan and western Assam (in northeast India).


Photo by @Chlidonias in the wild, India (subspecies geei).


Golden Langur (Trachypithecus geei) | ZooChat


Capped Langur Trachypithecus pileatus
Three subspecies: brahma, pileatus, tenebricus. The subspecies durga is best treated as a synonym of pileatus.

The Shortridge's Langur Trachypithecus shortridgei and the Golden Langur Trachypithecus geei have been treated as subspecies of the Capped Langur in the past.


Found mainly in northeastern India, extending into Bhutan, eastern Bangladesh, western Burma, and just barely into southern China: brahma is found north of the Brahmaputra River in northeast India; pileatus (and durga) to the south of the Brahmaputra, including into Bangladesh and Burma); and tenebricus north of the Brahmaputra (to the west of the range of brahma, and extending into Bhutan).


Photo by @Chlidonias in the wild, India (subspecies pileatus).


Capped Langur (Trachypithecus pileatus) | ZooChat


Photo by @Chlidonias in the wild, India (subspecies tenebricus).


Capped Langur (Trachypithecus pileatus) | ZooChat


Shortridge's Langur Trachypithecus shortridgei
Monotypic.

Formerly considered to be a subspecies of the Capped Langur Trachypithecus pileatus, despite it looking completely different.


Endemic to a very small area at the northern tip of Burma and adjoining part of China.


Photo by @Chlidonias at Yadanabon Zoo, Burma.


Shortridge's Langur (Trachypithecus shortridgei) | ZooChat

 

Trachypithecus - "francoisi group"


Most of the species in the "francoisi group" below were formerly lumped together under Trachypithecus francoisi.



Delacour's Langur Trachypithecus delacouri
Monotypic.


Endemic to northern Vietnam.


Photo by @Chlidonias in the wild, Vietnam.


Delacour's Langur (Trachypithecus delacouri) | ZooChat


Indochinese Black Langur Trachypithecus ebenus
Monotypic.

Almost certainly just an all-black colour form of the Hatinh Langur T. hatinhensis. Genetically they seem indistinguishable.


Known from central Vietnam and neighbouring parts of Laos.


Photo by @Himimomi at Nanning Zoo, China.


Indochinese black langur ('Trachypithecus ebenus') - ZooChat


Photo of female and baby by @Chlidonias at the Endangered Primate Rescue Centre, Vietnam.


Indochinese Black Langur ('Trachypithecus ebenus') with baby | ZooChat


Francois' Langur Trachypithecus francoisi
Monotypic.


Found in southern China and northern Vietnam.


Photo by @ro6ca66 at Twycross Zoo, UK.


Francois langur : Twycross : 31 Oct 2014 | ZooChat


Hatinh Langur Trachypithecus hatinhensis
Monotypic.


Endemic to central Vietnam and neighbouring parts of Laos.


Photo by @Maguari at the Endangered Primate Rescue Centre, Vietnam.


Hatinh Langur at EPRC Cuc Phuong, 10/03/12 | ZooChat


Laotian Langur Trachypithecus laotum
Monotypic.


Endemic to Laos.


Photo by @Deer Forest at the Weihai Shendiaoshan Wildlife Park, China.


Laotian langur (Trachypithecus laotum) | ZooChat


White-headed Langur Trachypithecus leucocephalus
Monotypic.

Formerly (and still by many authors) treated as a subspecies of the Cat Ba Langur T. poliocephalus.


Endemic to Guangxi in southern China.


Photo by @Himimomi in the wild, China.


White-headed langurs - ZooChat


Cat Ba Langur Trachypithecus poliocephalus
Monotypic.

The White-headed Langur T. leucocephalus was formerly (and is still by many authors) treated as a subspecies of T. poliocephalus.


Endemic to Cat Ba Island, off northern Vietnam.


Photo by @Giant Eland at the Endangered Primate Rescue Centre, Vietnam.


Cat ba langur (Trachypithecus poliocephalus poliocephalus) | ZooChat

 

Presbytis
Ten to fifteen species, eight of which are represented in the Zoochat galleries.


The taxonomy of this genus has constantly changed over the years, with many of the now-universally-accepted species having been lumped together. It is likely that more of the subspecies of various species listed below will be elevated to full species in the future. There has also been dispute over the divisions of species between the genera Presbytis and Trachypithecus.


As a group the common collective names in use for Presbytis species are "langur", "leaf monkey", and "surili". They can all be used interchangeably. For some reason I tend to use "langur" for Trachypithecus species and "leaf monkey" for Presbytis species.



Grizzled Leaf Monkey Presbytis comata
Monotypic. The subspecies fredericae is no longer considered valid.


Endemic to the Indonesian island of Java, with comata in west Java and fredericae in central Java.


Photo by @Javan Rhino at Howletts Wild Animal Park, UK.


Grizzled leaf monkey | ZooChat


Raffles' Leaf Monkey Presbytis femoralis
Monotypic.

Formerly there were three subspecies (femoralis, percura, robinsoni), but in 2020 a genetic study found that they were all quite distinct from one another and were not each others' closest relatives. They were therefore split into three distinct monotypic species (P. femoralis, P. percura, and P. robinsoni). The study can be read here: Faecal DNA to the rescue: Shotgun sequencing of non-invasive samples reveals two subspecies of Southeast Asian primates to be Critically Endangered species | Scientific Reports

Various other species were formerly (much earlier) also lumped under the Banded Leaf Monkey, including the Mitred Leaf Monkey group of Sumatra (P. melalophos etc), the Sarawak Langur P. chrysomelas, the White-thighed Leaf Monkey P. siamensis, etc.


Found in the south of Peninsular Malaysia and on Singapore.


Photo by @Casuarius_casuarius in the wild, Singapore.


Raffles’ Banded Langur (Presbytis femoralis) - ZooChat


Mitred Leaf Monkey Presbytis melalophos
Four subspecies: bicolor, melalophos, mitrata, sumatrana.

Has formerly been treated as a subspecies of the Banded Leaf Monkey Presbytis femoralis. All four of the subspecies above have been elevated to full species based largely on range and colouration. However even within single populations they are extremely variable in colouration and so I have retained them as subspecies here for simplicity (due to the difficulties of determining species in captive animals). Two of the (sub)species - bicolor and sumatrana - are basically black and white in colour; neither of these appear to be depicted in the Zoochat galleries. The other two (sub)species - melalophos and mitrata - are generally reddish and grey but range through buff to white; there are various forms of these two in the Zoochat galleries, although I wouldn't be confident in assigning any to a particular subspecies based on the zoo's labelling.


Endemic to the Indonesian island of Sumatra, with roughly bicolor in east-central; melalophos in the west; mitrata in the south; and sumatrana in the north.


Photo by @ThylacineAlive at Howletts Wild Animal Park, UK (subspecies melalophos). This zoo had animals separated as P. m. melalophos and P. m. nobilis, the latter now being a synonym of the former.


Sumatran Surili | ZooChat


Photo by @Vision at Batu Secret Zoo, Indonesia (labelled as Presbytis mitrata).


Silver surili, Presbytis mitrata | ZooChat


Photo by @devilfish at Taman Safari Bogor, Indonesia (labelled as a "Depigmented Mitred Surili", a name which appears to be used only by Zootierliste and refers to Presbytis (melalophos) mitrata).


Depigmented mitred surili, June 2016 | ZooChat


Natuna Island Leaf Monkey Presbytis natunae
Monotypic.

Has formerly been treated as a subspecies of the Banded Leaf Monkey P. femoralis (and variously of species then split from femoralis including the White-thighed Leaf Monkey P. siamensis and Mitred Leaf Monkey P. melalophos).


Endemic to the Natuna Islands of Indonesia. It is found only on the main island of Natuna Besar.


Photo by @devilfish at Ragunan Zoo, Indonesia.


Natuna island surili, June 2016 | ZooChat


Robinson's Leaf Monkey Presbytis robinsoni
Monotypic.

Formerly treated as one of three subspecies of the Banded Leaf Monkey P. femoralis.


Found on the Thai-Malay Peninsula, from southern Burma and Thailand south to the northwest corner of Peninsular Malaysia.


Photo by @Chlidonias in the wild, Thailand.


Banded Leaf Monkey (Presbytis femoralis robinsoni) | ZooChat


Maroon Leaf Monkey Presbytis rubicunda
Five subspecies: carimatae, chrysea, ignita, rubicunda, rubida.


Endemic to Borneo: carimatae on Karimata Island off south-west Kalimantan; chrysea in eastern Sabah; ignita up the western side of the island (Sarawak, Brunei, Sabah, and northern Kalimantan); rubicunda in eastern Kalimantan; and rubida in southwest Kalimantan.


Photo by @LaughingDove in the wild, Sabah (Malaysia) (subspecies chrysea).


Maroon Langur - Danum Valley | ZooChat


White-thighed Leaf Monkey Presbytis siamensis
Four subspecies: cana, paenulata, rhionis, siamensis.

In the past has also been treated as a subspecies of the Banded Leaf Monkey P. femoralis. At least some of the above subspecies may prove to be distinct species. A 2020 genetic study on the subspecies of P. femoralis (linked earlier in this post) found in addition that a faecal sample thought to be from the Sumatran subspecies P. s. cana was quite different genetically to the subspecies P. s. siamensis; however there remained the possibility that the sample was misidentified.


Found in the southern part of the Thai-Malay Peninsula and on the Indonesian island of Sumatra: cana in east-central Sumatra (south Riau Province) and on Kundur Island; paenulata in north Riau Province on Sumatra; rhionis on Bintan and Batam Islands in the Riau Archipelago off east Sumatra; and siamensis on the Thai-Malay Peninsula.


Photo by @Chlidonias in the wild, Peninsular Malaysia (subspecies siamensis).


White-thighed Langur (Presbytis siamensis) - ZooChat


Thomas' Leaf Monkey Presbytis thomasi
Monotypic.


Endemic to northern Sumatra in Indonesia.


Both photos below by @Chlidonias in the wild, Indonesia.


Thomas' Leaf Monkey (Presbytis thomasi) | ZooChat


Thomas' Leaf Monkey (Presbytis thomasi) | ZooChat

 

The remaining species of Presbytis, which are not represented in the Zoochat galleries, are listed below:



Kutai Grey Leaf Monkey Presbytis canicrus
Monotypic. Split from P. hosei.

Endemic to northeastern Kalimantan (Indonesian Borneo).


Sarawak Langur or Bornean Banded Leaf Monkey Presbytis chrysomelas
Two subspecies: chrysomelas and cruciger.

Formerly had been treated as a subspecies of Banded Leaf Monkey P. femoralis.

Endemic to Borneo with a limited range in coastal Sarawak (chrysomelas), and in west Kalimantan (cruciger).


White-fronted Leaf Monkey Presbytis frontata
Monotypic.

Endemic to Borneo.


Hose's Leaf Monkey Presbytis hosei
Monotypic.

Hose's Leaf Monkey (Presbytis hosei) was formerly composed of four subspecies which have now been split as three full (monotypic) species - hosei, sabana and canicrus - which seems reasonable given how distinctive each of them is in appearance. The fourth subspecies everetti appears to have been based on females of P. hosei (the species is sexually-dimorphic). None of the three species are represented in the Zoochat galleries, although I know @Hix has seen Presbytis hosei in the wild in Brunei.

Endemic to northeastern Borneo, including northern Sarawak and western Sabah (Malaysia), Brunei, and northeastern Kalimantan (Indonesia).


Sumatran Banded Leaf Monkey Presbytis percura
Monotypic.

Formerly treated as one of the three subspecies of Banded Leaf Monkey P. femoralis. The other two split species (P. femoralis and P. robinsoni) are both depicted in the previous post.

Found only on the east coast of the Indonesian island of Sumatra, where it is restricted to the province of Riau.


Pagai Leaf Monkey Presbytis potenziani
Monotypic.

Formerly with two subspecies (potenziani and siberu) with the species as a whole being named the Mentawai Leaf Monkey (or Mentawai Langur). P. siberu has since been split as a full species.

Endemic to the islands of Sipora, North Pagai and South Pagai, in Indonesia's Mentawai Islands off the west coast of Sumatra.


Sabah Grey Leaf Monkey Presbytis sabana
Monotypic. Split from P. hosei.

Endemic to eastern Sabah (Malaysian Borneo).


Siberut Leaf Monkey Presbytis siberu
Monotypic. Split from P. potenziani.

Endemic to the island of Siberut, in Indonesia's Mentawai Islands off the west coast of Sumatra.

 

Pygathrix
Three species, all of which are represented in the Zoochat galleries.

Formerly all three species in this genus were combined in Pygathrix nemaeus as subspecies.



Grey-shanked Douc Pygathrix cinerea
Monotypic.


When first discovered, the Grey-shanked Douc was thought to be a hybrid population between the Red-shanked and Black-shanked Doucs. It was then treated as a subspecies of Red-shanked Douc until the three species were each given full species status.


Endemic to the mountains of south-central Vietnam.


Photo by @Giant Eland at the Endangered Primate Rescue Centre, Vietnam.


grey-shanked douc langur (Pygathrix cinerea) | ZooChat


Red-shanked Douc Pygathrix nemaeus
Monotypic.


Found in central Vietnam and eastern Laos.


Photo by @Tomek at Cologne Zoo, Germany.


Red-shanked Douc Langur (Pygathrix nemaeus) | ZooChat


Black-shanked Douc Pygathrix nigripes
Monotypic.

Formerly treated as a subspecies of the Red-shanked Douc Pygathrix nemaeus.


Found in south Vietnam and eastern Cambodia.


Photo by @baboon at Nanning Zoo, China.


Black-shanked douc male | ZooChat

 

Rhinopithecus
Five species, four of which are represented in the Zoochat galleries.



Tonkin Snub-nosed Monkey Rhinopithecus avunculus
Monotypic.


Endemic to north Vietnam.


There are no photos of this species in the Zoochat galleries.


Yunnan or Black Snub-nosed Monkey Rhinopithecus bieti
Monotypic.

Formerly treated as a subspecies of the Golden Snub-nosed Monkey R. roxellana despite the considerable physical differences in appearance.


Endemic to the mountains of Yunnan, in southern China.


Photo by @Chlidonias in the wild, China.


Yunnan snub-nosed monkeys (Rhinopithecus bieti) | ZooChat


Photo of male by @Chlidonias in the wild, China.


Yunnan snub-nosed monkey (Rhinopithecus bieti) | ZooChat


Guizhou or Grey Snub-nosed Monkey Rhinopithecus brelichi
Monotypic.

Formerly treated as a subspecies of the Golden Snub-nosed Monkey R. roxellana despite the considerable physical differences in appearance.


Endemic to the Wuling Mountains of Guizhou, southern China.


Photo of male by @Deer Forest2 at Beijing Zoo, China.


Guizhou snub-nosed monkey (Rhinopithecus brelichi) male | ZooChat


Photo of female and young by @devilfish at Beijing Zoo, China.


Grey snub-nosed monkey, July 2016 | ZooChat


Golden Snub-nosed Monkey Rhinopithecus roxellana
Three subspecies: hubeiensis, qinlingensis, roxellana.

The Yunnan (R. bieti) and Guizhou Snub-nosed Monkeys (R. brelichi) were formerly treated as subspecies of R. roxellana despite the considerable physical differences in appearance between the taxa.

All three subspecies are kept in Chinese zoos but I haven't been able to find good sources to say which are kept where, and none are identified to subspecies on the photos in the Zoochat galleries. Based on colouration, I think both photos below are of the Sichuan subspecies roxellana.


Endemic to central China, with hubeiensis in the Daba Mountains of Hubei; qinlingensis in the Qinling Mountains of Shaanxi; and roxellana in the mountains of (mainly) Sichuan.


Photo of male by @bongowwf at Beijing Zoo, China.


Golden snub-nosed monkey / Rhinopithecus roxellana (male) | ZooChat


Photo of female by @bongowwf at Hangzhou Zoo, China.


Golden snub-nosed monkey / Rhinopithecus roxellana (female) | ZooChat


Myanmar Snub-nosed Monkey Rhinopithecus strykeri
Monotypic.


Endemic to a small area of mountain forest in north Burma and adjacent China. The species was only discovered in 2010 (in Burma, and the following year found to also occur in China).


Photo by @YuanChang at the Yaojiaping Rescue Station, China.


Myanmar snub-nosed monkey (Rhinopithecus strykeri) - ZooChat

 

Nasalis
One species.



Proboscis Monkey Nasalis larvatus
Possibly two subspecies, larvatus and orientalis, but the latter is barely-differentiated from the former and not many authorities recognise it as valid.


Endemic to Borneo, where it occurs mainly in mangroves and riverine forests throughout the island. The subspecies orientalis, if recognised, occurs in northeastern Kalimantan.


Photo of a male by @devilfish at Taman Safari Bogor, Indonesia (subspecies larvatus).


Proboscis monkey, June 2016 | ZooChat


Photo of females and young by @Vision at Taman Safari 2, Indonesia (subspecies larvatus).


Proboscis monkey, Nasalis larvatus | ZooChat


Photo by @UngulateNerd92 at the World Museum of Natural History, USA (museum specimen, labelled as being the subspecies orientalis).


Eastern proboscis monkey (Nasalis larvatus orientalis) | ZooChat

 

Simias
One species.



Pig-tailed Langur Simias concolor
Two subspecies: concolor and siberu.


Endemic to the Mentawai Islands off the west coast of Sumatra (Indonesia), with concolor on Sipora, North Pagai, and South Pagai; and siberu on Siberut.


There do not appear to be any photos of this species in the Zoochat galleries (even of museum specimens).

 

That is all the Colobinae finished. My own photos have been heavily used simply because I've seen a lot of Asian primates in the wild, and I find wild photos preferable to use if depicting known subspecies (as opposed to just general images of species). If anyone has photos showing species (or subspecies) not yet illustrated, then let me know.

The next part of this thread will cover the Cercopithecinae, which are mainly African in origin. For these species most photos will probably be of European zoo animals.

 

Because any tarsiers coming out of Sulawesi are "Spectral Tarsiers". Their specific place of capture on the island needs to be known to say which species they would be.

I don't know. Maguari's photo looks good for being pure hector, but as I noted Zootierliste has them as "generic" grey langurs. It is likely that they had pure hector when the photo was taken and now they don't. (Or alternatively Zootierliste just lumps everything they aren't 100% certain of into the generic basket).

 

That's excellent. I have used the first one there to replace the photo I had before, because I like your one better.

 

Yeah, that is pretty much the case.