e ▁feed ▁on ▁Bet ula ▁er man i , ▁Bet ula ▁gross a , ▁Bet ula ▁hum ilis , ▁Bet ula ▁n ana , ▁Bet ula ▁obsc ura , ▁Bet ula ▁p end ula ▁and ▁Bet ula ▁pub esc ens . ▁It ▁has ▁also ▁been ▁recorded ▁from ▁Sal ix ▁pent andra ▁in ▁Finland . ▁They ▁mine ▁the ▁leaves ▁of ▁their ▁host ▁plant . ▁The ▁mine ▁consists ▁of ▁a ▁round , ▁primary , ▁upper - sur face ▁bl ot ch ▁without ▁a ▁visible ▁initial ▁cor rid or . ▁There ▁are ▁often ▁several ▁mines ▁in ▁one ▁leaf . ▁The ▁mine ▁has ▁a ▁dark ▁centre , ▁where ▁the ▁lar va ▁often ▁retre ats . ▁ ▁References ▁ ▁External ▁links ▁▁ ▁Plant ▁Par as ites ▁of ▁Europe ▁Ne pt icul idae ▁from ▁the ▁Vol ga ▁and ▁U ral ▁region ▁E ct o ed emia ▁occ ult ella ▁at ▁UK M oth s ▁Swedish ▁moth s ▁E ct o ed emia ▁occ ult ella ▁images ▁at ▁ ▁Cons ort ium ▁for ▁the ▁Bar code ▁of ▁Life ▁ ▁Category : Ne pt icul idae ▁Category : M oth s ▁of ▁Asia ▁Category : M oth s ▁of ▁Europe ▁Category : M oth s ▁of ▁North ▁America ▁Category : T ax a ▁named ▁by ▁Carl ▁Lin na eus <0x0A> </s> ▁The ▁A cher on ▁River , ▁a ▁minor ▁in land ▁per enn ial ▁river ▁of ▁the ▁G oul burn ▁Bro ken ▁catch ment , ▁part ▁of ▁the ▁Murray - D ar ling ▁bas in , ▁is ▁located ▁in ▁the ▁lower