Mompha langiella (Hübner, 1796)
clouded mompha

Chamerion angustifolium, UK, Fleet © Rob Edmunds

Epilobium hirsutum, Belgium, prov. Namur, Jemelle: vacated mines © Jean-Yves Baugnée

Often several larvae in a leaf ….
mine
The larva begins by making a full depth corridor, erratic in width and course; frass black, in an irregular central line. Later on the larva makes a blotch, with frass in irregular clouds. This blotch can be a continuation of the corridor, but may just as well be on a different leaf. Often several mines in a leaf; in such cases the entire leaf me be mined out. Mines white at first, turning brown later. The larva lies venter-upwards in the mine. Pupation external.
host plants
Onagraceae, oligophagous
Circaea x intermedia, lutetiana; Chamerion angustifolium; Epilobium collinum, hirsutum, montanum, parviflorum.
Epilobium hirsutum and Circaea are the main host plants.
phenology
Larvae in June – July (Koster, 2002b).
BENELUX
BE recorded (Phegea, 2010).
NE recorded (Kuchlein & de Vos, 1999a; Microlepidoptera.nl, 2010).
LUX not recorded (Fauna Europaea, 2010).
distribution within Europe
Almost all Europe, but absent in parts of the Balkan peninsula and on the Mediterranean Islands (Fauna Europaea, 2010).
larve
pupa
See Patočka & Turčáni (2005a).
synonyms
Anybia, Mompha epilobiella (Römer, 1794); not to be confused with Mompha epilobiella (Denis & Schiffermüller, 1775).
references
Beiger (1970a), Buhr (1935b), Emmet & Langmaid (2002b), Hering (1925a, 1931/32f, 1957a), Huber (1969a), Huisman, Koster, Muus & van Nieukerken (2013a), Koster (2002b), Koster & Sinev (2003a), Kuchlein & Donner (1993a), Kuchlein & de Vos (1999a), Langmaid (1993a), Maček (1999a), Michalska (1970a), Patočka & Turčáni (2005a), De Prins (1998a), De Prins & Steeman (2013a), Robbins (1991a), Schmid (2019a), Skala (1949a), Sønderup (1949a), Starý (1930a), Surányi (1942a), Szőcs (1977a), Tomov & Krusteva (2007a), Zoerner (1969a, 1970a).