▁Rose ▁and ▁Lind qu ist ▁( 1 9 8 5 ) ▁had ▁noted ▁that ▁severe ▁injury ▁to ▁spr uce ▁is ▁unusual , ▁and ▁had ▁been ▁recorded ▁only ▁from ▁a ▁number ▁of ▁locations ▁in ▁Y uk on ▁Territ ory . ▁Level s ▁of ▁damage ▁in ▁the ▁ 1 9 9 2 ▁out break ▁decre ased ▁at ▁most ▁sites ▁in ▁ 1 9 9 4 , ▁and ▁by ▁spring ▁ 1 9 9 5 ▁the ▁out break ▁had ▁col lapsed . ▁About ▁ 1 5 ▁million ▁ha ▁were ▁affected ▁at ▁the ▁peak . ▁Other ▁out break s ▁have ▁occurred ▁in ▁Y uk on ▁Territ ory ▁in ▁ 1 9 6 8 ▁and ▁ 1 9 6 9 ▁( Tri pp ▁et ▁al . ▁ 1 9 7 0 ), ▁in ▁Connecticut ▁in ▁the ▁early ▁ 1 9 7 0 s ▁( Ste ph ens ▁ 1 9 8 5 ), ▁and ▁in ▁New ▁Brun sw ick ▁and ▁Nova ▁Scot ia ▁in ▁ 1 9 8 1 ▁and ▁ 1 9 8 2 ▁( Mag asi ▁ 1 9 8 3 ). ▁Typ ically , ▁out break s ▁have ▁been ▁local ized ▁and ▁of ▁short ▁duration . ▁ ▁Spr uce ▁gall ▁mid ges ▁over w inter ▁as ▁orange ▁lar va e ▁in ▁g alled ▁current - year ▁sho ots ▁( F elt ▁ 1 9 2 6 ). ▁Lar va e ▁are ▁about ▁ 1 . 5   mm ▁long ▁when ▁fully ▁grown . ▁The ▁pup a ▁is ▁formed ▁in ▁the ▁lar val ▁cell ▁in ▁early