“…It has been frequently performed with markers not related to any function or pathogenicity (KrauseSakate et al, 2001;Ribeiro et al, 2003). The genetic structure of a pest population is probably related to geographical distances and physical barriers, and may be dependent of alternative hosts off the insect (Cunha et al, 2010). More recently, efforts have been made to identify genes related to pathogenicy and study of diversity is conducted directly with them.…”