▁Pop ulus ▁su ave ol ens ▁and ▁Pop ulus ▁tr ich oc ar pa . ▁They ▁mine ▁the ▁leaves ▁of ▁their ▁host ▁plant . ▁The ▁mine ▁consists ▁of ▁long , ▁broad , ▁e pid erm al ▁cor rid or ▁that ▁wind s ▁in ▁dense ▁loops ▁over ▁the ▁upper - side ▁of ▁the ▁leaf ▁without ▁crossing ▁itself . ▁The ▁fr ass ▁is ▁depos ited ▁in ▁a ▁continuous , ▁vague ▁central ▁line . ▁The ▁mine ▁ends ▁at ▁the ▁leaf ▁margin , ▁where ▁the ▁cor rid or ▁is ▁slightly ▁w iden ed , ▁and ▁in ▁which ▁some ▁sil k ▁is ▁depos ited ▁to ▁create ▁a ▁pup al ▁chamber . ▁When ▁this ▁d ries , ▁the ▁leaf ▁margin ▁somewhat ▁fol ds ▁over . ▁The ▁mine ▁has ▁a ▁strong ▁res embl ance ▁to ▁the ▁trail ▁of ▁d ried ▁m uc us ▁left ▁by ▁a ▁small ▁sn ail . ▁ ▁References ▁ ▁Category : Ph yl loc n ist is ▁Category : M oth s ▁of ▁Japan ▁Category : M oth s ▁of ▁Europe ▁Category : M oth s ▁of ▁Turkey <0x0A> </s> ▁Walker ▁Township ▁is ▁a ▁town ship ▁in ▁Henry ▁County , ▁in ▁the ▁U . S . ▁state ▁of ▁Missouri . ▁ ▁Walker ▁Township ▁was ▁established ▁in ▁ 1 8 7 3 , ▁taking ▁its ▁name ▁from ▁Cal vin ▁Edward ▁Walker , ▁a ▁pione er ▁citiz en . ▁ ▁References ▁ ▁Category : T own ships ▁in ▁Missouri ▁Category : T own ships ▁in ▁Henry ▁County , ▁Missouri <0x0A> </s> ▁Ble ph ar ita ▁am ica ▁is