Nymphula nitidulata

Nymphula nitidulata, the beautiful china-mark, is a species of moth of the family Crambidae described by Johann Siegfried Hufnagel in 1767. It is found in Europe, Japan (Hokkaido), Turkey, Armenia, Russia (including Ural, Siberia, Amur) and China.^[2]

Beautiful china-mark
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Lepidoptera
Family:	Crambidae
Genus:	Nymphula
Species:	N. nitidulata
Binomial name
Nymphula nitidulata (Hufnagel, 1767)[1]
Synonyms
Nymphula stagnata Phalaena (Pyralis) potamogalis Hübner, 1793 Phalaena stagnata Donovan, 1806 Hydrocampa stagnalis Guenée, 1854

The wingspan is 20–25 mm. The forewings are white; costal edge and sometimes a subcostal line dark fuscous; a curved dark fuscous subbasal line; lines and transverse discal spots strongly outlined with dark fuscous, sometimes partly brownish, first curved, second indented below middle, connected by a prolongation with discal spot and first line, lines sometimes also connected on dorsum; a yellow-ochreous dark-margined terminal streak. Hindwings as forewings, but lines narrower, not connected, subbasal absent, discal mark oblique, narrow, dark fuscous, usually touching first line The larva is bright yellow or brownish-yellow; dorsalline dark brownish; head pale brown.^[3]

Figs.1 egg mass 1a, 1b, ic, 1d, 1e, 1f larvae in various stages of growth 1g, 1h cocoons 1ilarva highly magnified (mining Sparganium simplex and S. ramosum underwater)

The larvae feed on Sparganium and Nuphar lutea.