How many baby Delacour’s langurs are in a litter?
A Delacour’s langur (Trachypithecus delacouri) usually gives birth to around 1 babies.
Upon birth, they weight 23 grams (0.05 lbs) and measure 1.7 cm (0′ 1″). They are a member of the Cercopithecidae family (genus: Trachypithecus). An adult Delacour’s langur grows up to a size of 57.7 cm (1′ 11″).
To have a reference: Humans obviously usually have a litter size of one ;). Their babies are in the womb of their mother for 280 days (40 weeks) and reach an average size of 1.65m (5′ 5″). They weight in at 62 kg (137 lbs), which is obviously highly individual, and reach an average age of 75 years.
The Delacour’s langur, or Delacour’s lutung, (Trachypithecus delacouri) is a critically endangered species of lutung endemic to northern Vietnam. It is considered to be one of the world’s most endangered primate species. It is named for French-American ornithologist Jean Théodore Delacour.
Other animals of the family Cercopithecidae
Delacour’s langur is a member of the Cercopithecidae, as are these animals:
- Black-shanked douc with 1 babies per pregnancy
- Campbell’s mona monkey with 1 babies per pregnancy
- Western red colobus with 1 babies per pregnancy
- Dusky leaf monkey with 1 babies per pregnancy
- Black-footed gray langur weighting around 10.03 kilograms (22.11 lbs)
- Preuss’s red colobus with 1 babies per pregnancy
- Red-shanked douc with 1 babies per pregnancy
- Wolf’s mona monkey with 1 babies per pregnancy
- Celebes crested macaque with 1 babies per pregnancy
- Drill (animal) with 1 babies per pregnancy
Animals that share a litter size with Delacour’s langur
Those animals also give birth to 1 babies at once:
- Lumholtz’s tree-kangaroo
- Lander’s horseshoe bat
- Arabian gazelle
- Moluccan naked-backed fruit bat
- Straw-coloured fruit bat
- Galápagos fur seal
- Hoolock gibbon
- Yellow-tailed woolly monkey
- Three-striped night monkey
- Père David’s deer
Animals with the same size as a Delacour’s langur
Also reaching around 57.7 cm (1′ 11″) in size do these animals:
- L’Hoest’s monkey gets as big as 51 cm (1′ 9″)
- Masked palm civet gets as big as 63.4 cm (2′ 1″)
- Patagonian mara gets as big as 66.4 cm (2′ 3″)
- Bengal fox gets as big as 52.3 cm (1′ 9″)
- Bush dog gets as big as 62.6 cm (2′ 1″)
- Thollon’s red colobus gets as big as 57 cm (1′ 11″)
- Flat-headed cat gets as big as 46.7 cm (1′ 7″)
- Yunnan hare gets as big as 47 cm (1′ 7″)
- Suni gets as big as 59.9 cm (2′ 0″)
- Small Indian civet gets as big as 54 cm (1′ 10″)