Fam. Old World monkey, Cercopithecidae "Mandrill" by Just chaos via Flickr, Creative Commons Attribution.	Angola colobus, Colobus angolensis "Angola Colobus Monkey #2" by Poplinre via Flickr, Creative Commons Attribution ShareAlike.
Mantled guereza, Colobus guereza "Citadelle de Besançon" by ComputerHotline via Flickr, Creative Commons Attribution.	Proboscis monkey, Nasalis larvatus "Probiscis Monkey {Nasalis larvatus}" by Drew Avery via Flickr, Creative Commons Attribution.
Zanzibar Red Colobus, Piliocolobus kirkii "IMG_8437a" by Woodlouse via Flickr, Creative Commons Attribution ShareAlike.	Red-shanked douc, Pygathrix nemaeus "Red-shanked Douc Langur" by Daran Kandasamy via Flickr, Creative Commons Attribution-NoDerivs.
Golden snub-nosed monkey, Rhinopithecus roxellana "Golden Snub-nosed Monkeys" by Jackhynes via Flickr, Creative Commons Attribution ShareAlike.	Northern plains gray langur, Semnopithecus entellus "Tufted Grey Langur" by Rainbirder via Flickr, Creative Commons Attribution ShareAlike.
Dusky leaf monkey, Trachypithecus obscurus "Spectacled Langur (Presbytis obscura)" by Lip Kee via Flickr, Creative Commons Attribution ShareAlike.

Taxonomy:

Fam. Old World monkey, Cercopithecidae

Cercopithecinae (Add)

Cercopithecini (Add)

Gen. Allenopithecus (Add)
Gen. Cercopithecus (Add)
Gen. Chlorocebus (Add)
Gen. Erythrocebus (Add)
Gen. Miopithecus (Add)

Papionini (Add)

Gen. Cercocebus (Add)
Gen. Lophocebus (Add)
Gen. Macaca (Add)
Gen. Mandrillus (Add)
Gen. Papio
Gen. Rungwecebus (Add)
Gen. Theropithecus (Add)

Colobinae (Add)

Gen. Colobus (Add)

Angola colobus, Colobus angolensis

Mantled guereza, Colobus guereza

Colobus polykomos (Add)
Black colobus, Colobus satanas (Add)
Ursine colobus, Colobus vellerosus (Add)

Gen. Nasalis (Add)

Proboscis monkey, Nasalis larvatus

Gen. Piliocolobus (Add)

Western red colobus, Piliocolobus badius (Add)
Central African red colobus, Piliocolobus foai (Add)
Udzungwa red colobus, Piliocolobus gordonorum (Add)
Zanzibar Red Colobus, Piliocolobus kirkii

Piliocolobus pennantii (Add)
Piliocolobus preussi (Add)
Tana River red colobus, Piliocolobus rufomitratus (Add)
Piliocolobus tephrosceles (Add)
Piliocolobus tholloni (Add)

Gen. Presbytis (Add)

Sarawak surili, Presbytis chrysomelas (Add)
Javan surili, Presbytis comata (Add)
Banded surili, Presbytis femoralis (Add)
White-fronted surili, Presbytis frontata (Add)
Hose's langur, Presbytis hosei (Add)
Sumatran surili, Presbytis melalophos (Add)
Presbytis natunae (Add)
Mentawai langur, Presbytis potenziani (Add)
Presbytis rubicunda (Add)
White-thighed surili, Presbytis siamensis (Add)
Presbytis thomasi (Add)

Gen. Procolobus (Add)

Olive colobus, Procolobus verus (Add)

Gen. Pygathrix (Add)

Gray-shanked douc, Pygathrix cinerea (Add)
Red-shanked douc, Pygathrix nemaeus

Black-shanked douc, Pygathrix nigripes (Add)

Gen. Rhinopithecus (Add)

Tonkin snub-nosed langur, Rhinopithecus avunculus (Add)
Black snub-nosed monkey, Rhinopithecus bieti (Add)
Gray snub-nosed monkey, Rhinopithecus brelichi (Add)
Golden snub-nosed monkey, Rhinopithecus roxellana

Myanmar snub-nosed monkey, Rhinopithecus strykeri (Add)

Gen. Semnopithecus (Add)

Semnopithecus ajax (Add)
Semnopithecus dussumieri (Add)
Northern plains gray langur, Semnopithecus entellus

Semnopithecus hector (Add)
Black-footed gray langur, Semnopithecus hypoleucos (Add)
Semnopithecus priam (Add)
Semnopithecus schistaceus (Add)

Gen. Simias (Add)

Pig-tailed langur, Simias concolor (Add)

Gen. Trachypithecus (Add)

Javan lutung, Trachypithecus auratus (Add)
Tenasserim lutung, Trachypithecus barbei (Add)
Silvery lutung, Trachypithecus cristatus (Add)
Delacour's langur, Trachypithecus delacouri (Add)
Indochinese black langur, Trachypithecus ebenus (Add)
Francois' langur, Trachypithecus francoisi (Add)
Gee's golden langur, Trachypithecus geei (Add)
Indochinese lutung, Trachypithecus germaini (Add)
Hatinh langur, Trachypithecus hatinhensis (Add)
Nilgiri langur, Trachypithecus johnii (Add)
Laotian langur, Trachypithecus laotum (Add)
Dusky leaf monkey, Trachypithecus obscurus

Trachypithecus phayrei (Add)
Capped langur, Trachypithecus pileatus (Add)
White-headed langur, Trachypithecus poliocephalus (Add)
Trachypithecus shortridgei (Add)
Purple-faced langur, Trachypithecus vetulus (Add)