Pheosia tremula caterpillar · tuopinis kuodis, vikšras

EN · swallow prominent
DE · Pappel-Zahnspinner, Espen-Porzellanspinner
LV · apšu gaišais zobspārnis
PL · brunatnica koziagłówka, garbatka osinówka

https://en.wikipedia.org/wiki/Pheosia_tremula
The host plant of the swallow prominent are the poplar, especially the aspen, the willow and the birch.
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