▁the ▁Ag on ox en idae ▁and ▁Eth mi idae ▁which ▁seem ▁to ▁be ▁quite ▁distinct ▁among ▁the ▁Ge le chio idea , ▁as ▁well ▁as ▁other ▁line ages ▁which ▁are ▁widely ▁held ▁to ▁be ▁closer ▁to ▁O ec op hora ▁than ▁to ▁E lach ista ▁and ▁are ▁thus ▁placed ▁in ▁the ▁conce aler ▁moth ▁family ▁O ec op hor idae ▁here . ▁ ▁These ▁grass - min ers ▁are ▁very ▁small ▁moth s ▁with ▁the ▁" fe ath ery " ▁h ind w ings ▁characteristic ▁of ▁their ▁family . ▁They ▁are ▁essentially ▁found ▁world wide , ▁except ▁in ▁very ▁cold ▁places ▁and ▁on ▁some ▁ocean ic ▁islands ; ▁as ▁usual ▁for ▁Ge le chio idea , ▁they ▁are ▁most ▁common ▁in ▁the ▁Pale ar ctic ▁however . ▁They ▁usually ▁have ▁at ▁least ▁one , ▁sometimes ▁as ▁many ▁as ▁three ▁light ▁bands ▁running ▁from ▁leading ▁to ▁trailing ▁edge ▁of ▁their ▁for ew ing ▁upp ers ides . ▁Some ▁species , ▁however , ▁have ▁upper ▁for ew ings ▁that ▁are ▁mostly ▁white . ▁ ▁Selected ▁species ▁Not ▁all ▁species ▁of ▁this ▁large ▁genus ▁have ▁been ▁discovered ▁yet , ▁let ▁alone ▁valid ly ▁described ▁and ▁named . ▁Several ▁small ▁gener a , ▁e . g . ▁Bis el ach ista ▁and ▁Cos mi otes , ▁are ▁here ▁included ▁in ▁E lach ista ▁as ▁junior ▁syn onym s ▁( see ▁below ). ▁They ▁seem ▁to ▁be ▁at ▁least ▁as ▁closely ▁related ▁to ▁E . ▁b if as ci ella ▁( the ▁type ▁species ▁of ▁the ▁present