Eudonia lacustrata is a species of moth of the family Crambidae described by Georg Wolfgang Franz Panzer in 1804.

It is found in Europe, north-west Africa, Asia from Turkey, Iran and Syria[1] to Siberia and the western part of China (Hunan).

The subspecies E. lacustrata persica is found in Iran and Armenia.

[citation needed] Forewings whitish, sometimes mixed with light ochreous-yellowish, sprinkled with black; base black-marked; lines whitish, blackish-edged, first irregular, second rather sinuate; orbicular and claviform dot-like, black; a black X-shaped discal mark; terminal area grey mixed with black, subterminal line white, interrupted in middle.

Larva yellowish-green; spots brownish-green; head and plate of 2 black-brown: on mosses; 3, 4.