Macaque China reported in the journal "Cell" the creation of two crab-eating macaque monkey clones, named "Zhong Zhong" and "Hua Hua", using the complex DNA transfer method that produced "Dolly" the sheep, for the first time. As of 2005, the authors of "Mammal Species of the World" recognized the following species and species groups, aside from the white-cheeked macaque which was described in 2015: Later studies disputed some of the species groupings. For example, Li, "et al", based on DNA testing, do not recognize the "M. fascularis" group. Rather, they place the crab-eating macaque within the "M. mulatta" group and the
Crab-eating macaque and "M. f. condorensis" is vulnerable. All other subspecies are listed as data deficient and need further study; although recent work is showing "M. f. aurea" and "M. f. karimondjawae" need increased protection. One concern for conservation is, in areas where "M. fascicularis" is not native, their populations need to be monitored and managed to reduce their impact on native flora and fauna. The genome of the crab-eating macaque has been sequenced. On 24 January 2018, scientists in China reported in the journal "Cell" the creation of two crab-eating macaque clones, named "Zhong Zhong and Hua Hua", using the complex