ana . ▁ ▁The ▁wings pan ▁is ▁ 1 4 – 1 5   mm . ▁The ▁for ew ings ▁are ▁white , ▁with ▁scattered ▁dark ▁fus c ous ▁scales ▁in ▁the ▁disc ▁and ▁towards ▁the ▁d ors um ▁and ▁with ▁dark ▁fus c ous ▁mark ings . ▁There ▁is ▁a ▁longitud inal ▁line ▁from ▁the ▁base ▁of ▁the ▁costa ▁to ▁one - fif th ▁of ▁the ▁disc ▁and , ▁in ▁males , ▁a ▁tri angular ▁bl ot ch ▁on ▁the ▁base ▁of ▁the ▁d ors um , ▁another ▁on ▁the ▁middle , ▁and ▁a ▁quadr ate ▁bl ot ch ▁before ▁the ▁torn us , ▁not ▁reaching ▁half ▁across ▁the ▁wing . ▁In ▁females , ▁all ▁three ▁are ▁larger ▁and ▁ob long , ▁occup ying ▁the ▁d ors um ▁except ▁for ▁narrow ▁inter spaces , ▁reaching ▁half ▁across ▁the ▁wing . ▁There ▁is ▁an ▁irregular ▁line ▁from ▁one - fif th ▁of ▁the ▁costa ▁to ▁the ▁second ▁d ors al ▁bl ot ch ▁and ▁a ▁dash ▁in ▁the ▁middle ▁of ▁the ▁disc , ▁terminated ▁by ▁the ▁following ▁line . ▁A ▁very ▁ob lique ▁line ▁is ▁found ▁from ▁the ▁costa ▁before ▁the ▁middle ▁to ▁the ▁upper ▁anterior ▁angle ▁of ▁the ▁pre - t ornal ▁bl ot ch , ▁somewhat ▁bent ▁above ▁the ▁middle , ▁and ▁a ▁slightly ▁cur ved ▁line ▁from ▁two - third s ▁of ▁the ▁costa ▁to ▁its ▁posterior ▁angle . ▁There ▁are ▁eight ▁marg inal ▁d ots ▁around ▁the ▁a pe x ▁and ▁term en , ▁the ▁fifth ▁( ap ical