. ▁It ▁was ▁described ▁by ▁Arthur ▁Gard iner ▁Butler ▁in ▁ 1 8 7 9 . ▁It ▁is ▁found ▁in ▁Japan ▁( H ok ka ido , ▁H ons hu ) ▁and ▁the ▁Russian ▁Far ▁East ▁( S ak hal in , ▁the ▁Kur iles ). ▁ ▁The ▁length ▁of ▁the ▁for ew ings ▁is ▁ 7 . 4   mm ▁for ▁males ▁and ▁ 8 . 2   mm ▁for ▁females . ▁The ▁for ew ings ▁are ▁dark ▁brown . ▁The ▁base ▁of ▁the ▁h ind w ings ▁is ▁pure ▁white . ▁Ad ult s ▁are ▁on ▁wing ▁from ▁late ▁June ▁to ▁August . ▁ ▁The ▁lar va e ▁feed ▁on ▁Pot am og eton ▁species . ▁Young ▁lar va e ▁mine ▁the ▁leaves ▁of ▁their ▁host ▁plant . ▁Old er ▁lar va e ▁make ▁a ▁port able ▁case ▁of ▁leaf ▁fragments ▁and ▁feed ▁extern ally . ▁Full - g rown ▁lar va e ▁reach ▁a ▁length ▁of ▁ 1 3 – 1 8   mm . ▁The ▁body ▁and ▁head ▁and ▁pale ▁brown . ▁P up ation ▁takes ▁place ▁in ▁the ▁lar val ▁case . ▁ ▁References ▁ ▁Category : A cent rop inae ▁Category : M oth s ▁described ▁in ▁ 1 8 7 9 <0x0A> </s> ▁Vill ars - les - Bo is ▁is ▁a ▁commune ▁in ▁the ▁Char ente - Mar itime ▁department ▁in ▁south western ▁France . ▁ ▁Population ▁ ▁See ▁also ▁Comm unes ▁of ▁the ▁Char ente - Mar itime ▁department ▁ ▁References ▁IN SEE ▁