. ▁The ▁moth s ▁are ▁most ▁active ▁during ▁periods ▁of ▁m ating ▁and ▁ov ip osition ing . ▁They ▁fly ▁higher , ▁above ▁the ▁spr uce ▁trees , ▁after ▁day light ▁and ▁during ▁d usk ▁and ▁evening , ▁and ▁remain ▁lower ▁among ▁the ▁crown ▁of ▁the ▁spr uce ▁trees ▁during ▁the ▁day ▁when ▁the ▁temperature ▁is ▁higher . ▁ ▁Pred ators ▁and ▁par as ites ▁ ▁Pred ators ▁ ▁Pred ators ▁that ▁feed ▁on ▁eggs ▁typically ▁pre date ▁un par as it ized ▁eggs , ▁and ▁pred ation ▁begins ▁up ▁to ▁ 3 ▁weeks ▁after ▁ov ip osition ▁has ▁occurred . ▁Specific ▁pred ators ▁have ▁not ▁been ▁identified . ▁ ▁Par as ites ▁ ▁Spr uce ▁bud ▁moth s ▁are ▁par as it ized ▁by ▁was ps ▁of ▁the ▁genus ▁Tr ich ogram ma ''' ', ▁a ▁family ▁of ▁par as it ic ▁was p ▁that ▁use ▁sm ell ▁to ▁identify ▁eggs ▁to ▁par as it ize . ▁The ▁was p ▁begins ▁par as it izing ▁ 1 4 ▁days ▁following ▁the ▁start ▁of ▁the ▁process ▁of ▁h atch ing ▁of ▁the ▁lar va e ▁and ▁continues ▁for ▁around ▁a ▁month ▁after ward . ▁E gg ▁par as it ism ▁typically ▁begins ▁ 5 ▁weeks ▁after ▁ov ip osition ▁occurs ▁and ▁does ▁not ▁have ▁any ▁connection ▁with ▁the ▁egg ▁density ▁at ▁ov ip osition . ▁ ▁M ating ▁ ▁Fem ale - male ▁interactions ▁ ▁Ph er om ones ▁ ▁E - 9 - t etra dec en yl - ac et ate