Acidia cognata (Wiedemann, 1817)
on Petasites, etc.

Tussilago farfara, Belgium, prov. Namur, Dourbes, Montagne aux Buis © Carina Van Steenwinkel

Tussilago farfara, Belgium, prov. Luxembourg, Durbuy, la vieille Briqueterie de Rome © Carina Van Steenwinkel

mine lighted from behind

larva in the mine

Tussilago farfara, Schinkelbos: primary and secondary feeding lines
mine
Upper-surface corridor, in the end strongly widened and blotchy; may occupy a large portion of smaller leaves. Mines may coalesce, and contain several larvae then. Primary and secondary feeding lines very conspicuous (picture). Pupation outside the mine.
host plants
Asteraceae, narrowly oligophagous
Adenostyles alpina; Homogyne alpina, discolor; Petasites albus, hybridus, paradoxus, pyrenaicus, spurius; Tussilago farfara.
phenology
Larvae in August-October (Hering, 1957a).
BENELUX
BE observed (Baugnée, 2009a).
NE observed (de Meijere, 1939a).
LUX observed (Ellis).
distribution within Europe
Almost all of Europe, with exception of the Iberian Peninsula and Greece (Fauna Europaea, 2007).
larva
synonyms
Euleia, Prionimera cognata.
notes
Atypical mines of this species have been observed on coltsfoot that remained corridors, perhaps in connection with being parasitised.
references
van Aartsen & Smit (2002a), Baugnée (2006a, 2009a), Beiger (1955a, 1970a, 1979a), Belcari (1991a), Buhr (1933a, 1941a, 1964a), Csóka (2003a), van Frankenhuyzen, Houtman & Kabos (1982a), Görmez & Kütük (2020a), Hering (1937b, 1957a, 1961a), Huber (1969a), Leclercq & De Bruyn (1991a), Lutovinovas (2014a), de Meijere (1939a), Merz & Kofler (2008a), Michalska (1970a, 1972a, 1976a), Niblett (1956a), Nowakowski (1954a), Ostrauskas, Pakalniškis & Taluntytė (2003a), Pakalniškis (1983a), Robbins (1991a), Skala (1951a), Skala & Zavřel (1945a), Smit (2010a), Sønderup (1949a), Stammer (2016a), Starý (1930a), Ureche (2010a), White (1988a), Zoerner (1969a)