Digitivalva arnicella (von Heyden, 1863)
Arnica montana, Tynaarlo © Ben van As
Arnica montana, Borger; leg Gerard Oostermeijer & Sheila Luijten
At first a light green, narrow, sometimes branching corridor, widening considerably later. Frass in an irregular, rather broad central line. The larva frequently moves to another leaf. Pupation in a separate, lower-surface mine.
Larvae from autumn till May (Hering, 1957a).
BE recorded (Phegea, 2009).
NE recorded (Kuchlein & de Vos, 1999a; Microlepidoptera.nl, 2009).
LUX not recorded (Fauna Europaea, 2009).
distribution within Europe
From Scandinavia to the Pyrenees and Italy, and from France to the Baltic States and Romania (Fauna Europaea, 2009).
Described by Patočka & Turčáni (2005a). See van Nieukerken & Koster (1999a) for a picture.
In the Netherlands a strongly declining species.
Regis Nossent found in België a single leaf of A. montana with three tiny vacated mines. Many points suggest that it are juveniles mines of D. arnicella, but they differ strongly from the fully developed mines of that species. This requires further study.
Arnica montana, Belgium, prov. Liege, Elsenborn, 17.vi.2018 © Regis Nossent: leaf with three vacated mines
one of the three mines
another of the three
Bengtsson & Johansson (2011a), Buhr (1964a), Corley, Merckx, Cardoso ao (2012a), Gaedike (1972a), Hering (1931a, 1957a, 1963a), Huber (1969a), Huemer (1986b), Klimesch (1958a), Kuchlein & Donner (1993a), Kuchlein & de Vos (1999a), van Nieukerken & Koster (1999a), Patočka & Turčáni (2005a), Sønderup (1949a), Szőcs (1977a), Wegner (2010a).