Acentria ephemerella (Denis & Schiffermüller, 1775)
full grown larva
pupa in its cocoon
Some of the larvae that hatch live for a short while as borer in the stem or midrib; later they live free. When the shape of the leaf is suitable they live in a folded leaf margin, secured with silk; thy also can use two or three leaves to makes themselves a transportable case. The larva is fully aquatic. Also the pupation is below water, in a flimsy cocoon; after the emergence the exuvium remains in the cocoon. It is no real miner, but the species has been included in Hering’s (1957a) compilation.
Ceratophyllaceae, Haloragaceae, Hydrocharitaceae, Potamogetonaceae; narrowly polyphagous
Not on Elodea nuttallii (Gross ao, 2002a).
Mining larvae in September (Hering, 1957a). The larva hibernates, in a hibernaculum in a submerged stem.
BE recorded (Phegea, 2011).
NE recorded (Kuchlein & de Vos, 1999a; Microlepidoptera.nl, 2011).
LUX recorded (Fauna Europaea, 2011).
distribution within Europe
Throughout Europe, except Iceland and the Balkan Peninsula (Fauna Europaea, 2011).
Transparent-whitish, head capsule black. See also Passoa (1988a), Vallenduuk & Cuppen (2004a).
Acentropus niveus (Olivier, 1791).
The species plays a role in the biological control of introduced pest water plants.
Berg (1941a), Corley, Marabuto, Maravalhas, Pires & Cardoso (2008a), Gross, Feldbaum & Choi (2002a), Hering (1957a), Miler (2008a), Passoa (1988a), Vallenduuk & Cuppen (2004a), Vallenduuk, Cuppen & van der Velde (1997a).