Old World monkey
Colobine and macaque monkeys migrated from Africa into the Eurasian continent 10 and 6 millions of years ago respectively and became the ancestors of the extant Asian Old World monkey species. Asian Old World monkey malaria parasite species infect both colobine and macaque monkeys. The existing divergence between the Asian and African clade of this subgenus seems likely to have been caused by intercontinental allopatric speciation along with that of their hosts.