Cosmopterix lienigiella Zeller, 1846
fen cosmet

Phragmites australis; coll Sjaak Koster
mine
At first a gallery, but soon widened to a broad blotch, entirely or partly running upwards, in the end half as wide as the leaf. The mine is widened without consideration for the length veins, making the mine less sharply delineated than in C. scribaiella. Most frass in the first section, but higher up still some scattered frass visible. Contrary to C. scribaiella the larva does not spin a shelter for retreat in the mine; this makes the larva easily visible in the unopened mine. Cocoon in the top section of the mine. The pupa lies head-upwards, just below an opening that has been prepared as an exit for the later moth.
host plants
Poaceae, monophagous
Phragmites australis.
phenology
Larvae from September till April (Hering, 1957a).
BENELUX
BE recorded (Phegea, 2010).
NE recorded (Kuchlein & de Vos, 1999a; Microlepidoptera.nl, 2010).
LUX not recorded (Fauna Europaea, 2010).
distribution within Europe
From Fennoscandia to Spain, the Alps, and Greece, and from Ireland to the Ukraine; also in East-Russia (Fauna Europaea, 2010).
larva, pupa
Head and pronotum black; body brownish red, segment limits lighter.
pupa
See Patočka & Turčáni (2005a).
references
Beiger (1955a), Buhr (1935b), Emmet & Langmaid (2002b), Gielis, Huisman, Kuchlein ao (1985a), Hering (1957a), Huisman & Koster (1998a), Huisman, Koster, van Nieukerken & Ulenberg (2004a), Kasy (1965a), Koster (2002c), Koster & Sinev (2003a), Kuchlein & Donner (1993a), Kuchlein & de Vos (1999a), Liška ao (2000a), Patočka & Turčáni (2005a), De Prins (1998a), De Prins & Steeman (2011a), Schütze (1931a), Skala (1949a), Sønderup (1949a), Sterling (1997a), Šumpich (2011b), Szőcs (1977a), Triberti, Longo Turri, Adami & Zanetti (2017a), Wieser & Huemer (1999a).