Text and photos Aare Lindt, www.loodusmuuseum.ee
Pebble prominent Siksak-hammastutlane Notodonta ziczac (Linnaeus, 1758)
The pebble prominent occurs in all Estonia and it is quite common locally. The mothe fly in broadleaf and mixed forests, and in parks and gardens from mid-May until mid-June, a few specimens can also be seen later. In the second half of summer the second generation appears but it is not as numerous as the springtime one.
The pebble prominent flies at night and it is easy to recognize from its particular wing pattern.
The caterpillars feed on willows and aspens.