Seq # 500820010

Cataclysta lemnata (Linnaeus, 1758) Species

Last modified: Oct. 25, 2023, 5:58 p.m.

A common species in the northern part of Belgium, elsewhere rather rare.


Family: Crambidae > Subfamily: Acentropinae > Genus: Cataclysta > Species: Cataclysta lemnata
Vernacular names
Kroosvlindertje (NL), Small China-mark moth (EN), Hydrocampe de la lentille d'eau (FR), Wasserlinsenzünsler (DE)
First mention in Belgium
De Sélys-Longchamps E. 1844. Énumération des insectes Lépidoptères de la Belgique. — Mémoires de la Société royale des Sciences de Liége 2: 1–35. On page 19 (as Hydrocampa lemnalis). view page




Museum specimens

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Specimens in nature


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The larva constructs an irregular, oval, portable case of leaf fragments of the food plant. The case contains air but the larva lives under the water surface.
Pupation in a dense oval cocoon of white silk covered with leaf fragments attached just below the water surface.
The males fly at dusk over the surface of the water, females are active at night. Both sexes come to light.

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Flight periods

The adults fly usually from May towards September, occasionally later.

Observed on

Host plant (genera):

The larva lives on Lemna.

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