Hydriomena impluviata · alksninė cidarija

• Geometra impluviata
• May highflyer
• alkšņu mainīgais lapsprīžmetis

https://en.wikipedia.org/wiki/May_highflyer The larva feeds on the leaves of alder, spinning two leaves together so it can feed undisturbed. The species overwinters as a pupa under loose alder bark.