Yponomeuta rorrella (Hübner, 1796)

willow ermine


In spring the young larva make communal full depth blotch mines; soon after they live free in a three dimensional communal web.

host plants

Salicaceae, monophagous

Salix alba, cinerea, “x fragilis”.


Mining larvae around May, June; free living in June, July (Hering, 1957a; Agassiz, 1996a).


BE recorded (Phegea, 2010).

NE recorded (Kuchlein & de Vos, 1999a; Microlepidoptera.nl, 2010).

LUX recorded (Fauna Europaea, 2010).

distribution within Europe

Most of Europe; not in Norway, Ireland, and large parts of the Balkan (Fauna Europaea, 2010).


Body light grey; each segment with a large, subdorsal brownish black spot; head, feet, prothoracic and anal plates brownish black.


Two-coloured: head and thorax (with wings, feet and antennae) and tip of abdomen dark chocolate brown, yellow. See also Patočka & Turčáni (2005a)


Hyponomeuta, Yponomeuta rorellus auct.


Abras, Fassotte, Chandelier & Cavelier (2008a), Agassiz (1996a), Baldizzone (2004a), Bengtsson & Johansson (2011a), Gómez de Aizpúrua (2003a), Hering (1957a), Huisman, Koster, van Nieukerken & Ulenberg (2004a [“rorella”]), Kuchlein & Donner (1993a), Kuchlein & de Vos (1999a), Patočka & Turčáni (2005a), De Prins (1998a), Robbins (1991a), Szőcs (1977a), Wörz (1957a).

mod 5.viii.2019