▁the ▁second ▁ab dom inal ▁stern ite . ▁This ▁structure ▁distingu ishes ▁it ▁from ▁other ▁Russian ▁S col yt us ▁species . ▁M ales ▁also ▁have ▁b umps ▁on ▁the ▁ 3 rd ▁and ▁ 4 th ▁ab dom inal ▁stern ites , ▁which ▁females ▁lack . ▁ ▁Life ▁cycle ▁ ▁The ▁usual ▁flight ▁period ▁is ▁June – J uly ▁in ▁sout he astern ▁Russia . ▁The ▁female ▁b ores ▁a ▁vertical ▁egg ▁gallery ▁( 5 – 7   cm ▁in ▁length ▁and ▁up ▁to ▁ 2 . 5   mm ▁of ▁diameter ) ▁below ▁the ▁b ark ▁of ▁the ▁tr unk ▁or ▁thick ▁branches ▁of ▁decl ining ▁el ms , ▁either ▁standing ▁or ▁fallen , ▁including ▁el ms ▁burn ed ▁by ▁grass ▁fires , ▁and ▁also ▁on ▁health y ▁el ms ▁when ▁be et le ▁population ▁is ▁high ▁or ▁if ▁the ▁el ms ▁stand ▁a ▁short ▁while ▁away ▁from ▁the ▁forest . ▁E gg s ▁are ▁laid ▁on ▁the ▁sides ▁of ▁this ▁gallery ▁on ▁the ▁inner ▁surface ▁of ▁the ▁b ark . ▁Long ▁gall eries ▁contain ▁about ▁a ▁hundred ▁eggs . ▁Upon ▁h atch ing , ▁lar va e ▁bore ▁their ▁own ▁gall eries ▁per pend icular ly ▁from ▁the ▁egg ▁gall eries , ▁close ▁to ▁one ▁another , ▁often ▁touch ing ▁adjacent ▁lar val ▁gall eries , ▁but ▁rarely ▁intersect ing . ▁Lar va e ▁pup ate ▁in ▁mid – J uly . ▁Ad ult s ▁emer ge ▁in ▁late ▁July ▁and ▁early ▁August . ▁So on ▁after ▁emer ging ,