Outer Hebrides

Hydriomena impluviata [Denis & Schiffermüller], 1775
May Highflyer

Family: Geometridae
Checklist Number: 70.075

A very scarce species on the islands, found in damp woodland and flying mainly from May - June. Can look similar to worn examples of some Ruddy Highflyers and may need dissection to confirm identity

The larvae feed upon alder Alnus glutinosa

Hydriomena impluviata