ings ▁are ▁extens ively ▁covered ▁with ▁a ▁met all ic ▁golden ▁sh immer ing ▁surface . ▁Only ▁the ▁cost al ▁field ▁and ▁hem ▁are ▁brown . ▁Sub - bas al , ▁an tem ed ial ▁and ▁post med ial ▁w aved ▁lines ▁very ▁ind ist inct , ▁fine ▁and ▁wh it ish ▁in ▁colour . ▁The ▁sub - m arg inal ▁line ▁irregular ly ▁lun ulate . ▁The ▁ren iform ▁and ▁orb icular ▁t ain ▁are ▁small ▁and ▁white ▁border ed . ▁The ▁un pattern ed ▁h ind w ings ▁are ▁grey ▁brown , ▁somewhat ▁dark er ▁at ▁the ▁margin . ▁The ▁thor ax ▁is ▁fur ry ▁and ▁with ▁some ▁hair ▁tu ft s , ▁the ▁prob os cis ▁is ▁well ▁developed . ▁ ▁Lar va ▁bl u ish ▁green ▁with ▁a ▁few ▁short ▁d ors al ▁hair s . ▁There ▁are ▁sl ender ▁d ors al ▁white ▁lines ▁and ▁a ▁prominent ▁later al ▁line . ▁ ▁E col ogy ▁The ▁moth ▁f lies ▁from ▁August ▁to ▁October , ▁depending ▁on ▁the ▁location . ▁ ▁The ▁lar va e ▁feed ▁on ▁various ▁her b ace ous ▁plants , ▁including ▁cro ps ▁such ▁as ▁sun flow er , ▁Core opsis , ▁pot ato ▁and ▁so y bean . ▁In ▁man aging ▁their ▁population , ▁ph eny lac etal de hy de , ▁a ▁vol atile ▁fl oral ▁comp ound ▁attract ive ▁to ▁many ▁Le pid optera ▁and ▁present ▁in ▁Canada ▁th ist le ▁( C ir si um ▁ar ven se ), ▁was ▁found