 Opportunistic hunting of lorises has been a traditional practice , for example , when a tree in which the primate is living is cut down . When forests are cleared to create oil palm ( Elaeis guineensis ) plantations or for housing , the lorises are collected from the trees and then sold to the " loris man " , who in turn sells them in the cities . Timber merchants in Kalimantan and Aceh also sell slow lorises to traders , and since the primates cling to branches instead of fleeing , they are often transported hundreds of miles on the original tree branches to which they clung . 
