Caenorhinus mannerheimii (Hummel, 1823)
polyphagous on woody plants
The larva is said to mine a fallen leaf, perhaps comparable to Neocoenorrhinus pauxillus.
Mainly on birch.
distribution within Europe
larva (from Lee & Morimoto)
Dieckman (1974a), Lee & Morimoto (1988a), Rheinheimer & Hassler (2010a), Yunakov, Nazarenko, Filimonov & Volovnik (2018a).