Seq # 260210010

Cosmopterix lienigiella Zeller, 1846 Species

Last modified: June 24, 2021, 1:57 p.m.

A very rare and local species in Belgium, only known from some dispersed localities in Flanders.


Family: Cosmopterigidae > Subfamily: Cosmopteriginae > Genus: Cosmopterix > Species: Cosmopterix lienigiella
Vernacular names
Gele rietprachtmot (NL), Lienigs Schilf-Prachtfalter (DE)
First mention in Belgium
Van Daele E. & Pelerents C. 1969. Synthèse des observations effectuées pendant quatre années sur les lépidoptères nocturnes de la région horticole gantoise. — Mededelingen Rijksfaculteit Landbouwwetenschappen Gent 34: 31–56. On page 38.




Museum specimens

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Specimens in nature


At first a rather short, straight gallery, soon widening into an elongated blotch. Unlike the other Cosmopterix species which mine into Phragmites it does not construct a silken tube for shelter and hence, the larva is visible through the mine. Several larvae sometimes mine the same leaf.
See also

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The species hibernates in the larval stage, inside the mine.
Pupation in the mine in springtime.
The adults fly around the food plant at dusk and later come to light.

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Flight periods

One generation a year: from the end of May till mid-October.

Observed on

Host plant (species):
Phragmites australis

Monophagous on Phragmites australis.

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Most types of habitat where the foodplant grows, with a preference for large reed beds in both fresh and brackish water.

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