I stopped counting how many from the list I’ve seen in the wild once I realized how incomplete and in error the list is, based on my experience working on the conservation of some of these species.
Just within the primates here are some that are missing or in error (and if there are this many missing from the primates then it’s absolutely certain that a lot are missing elsewhere in the list too):
White‐headed Langur this is the Cat Ba Langur, not the White-headed Langur (see below)
- Note: this is one of the species with a vanishingly small population that I’m responsible for the conservation of - present population 71, up from a low of 40 or less.
Trachypithecus leucocephalus - White‐headed Langur CR
Trachypithecus delacouri - Delacour’s Langur CR
Rhinopithecus avunculus - Tonkin snub-nosed monkey CR
Presbytis chrysomelas - Sarawak surili CR
Propithecus candidus - Silky sifaka CR
Leontopithecus caissara - Superagüi lion tamarin CR
Cebus flavius - Blond capuchin EN
Prolemur simus - Greater bamboo lemur CR
Semnopithecus ajax - Kashmir gray langur EN
Callicebus coimbrai - Coimbra Filho’s titi EN (likely below 1000, more survey work needs to be done)
Pygathrix cinerea - Gray-shanked Douc langur CR
Macaca munzala - Arunachal macaque EN
Rhinopithecus brelichi - Gray snub-nosed monkey EN
Brachyteles hypoxanthus - Northern muriqui CR
Pongo tapanuliensis - Tapanuli orangutan CR
That’s 15 missing species and 1 error that I caught just in primates alone.
And there are a few more where the population is dropping and is likely to already be below 1000, as well as a number of lemurs where genetic work is leading to the designations of new species that have very small populations.