Seq # 275020100

Coleophora alcyonipennella (Kollar, 1832) Species

Last modified: Nov. 18, 2023, 2:26 p.m.

This fairly common species is found all over Belgium.


Family: Coleophoridae > Genus: Coleophora > Species: Coleophora alcyonipennella
Vernacular names
Metaalkokermot (NL), Clover case-bearer (EN), Metall-Sackmotte (DE)
Coleophora frischella sensu auct., nec (Linnaeus, 1758)
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 25 (as Elachista alcyonipennella ? Kollar). view page




Wingspan: 10–14 mm.
The forewings are metal-green.
The antennae are ringed with alternating black and white segments to 4/5 of their length while the remaining part at the top is purely white.

Museum specimens

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Specimens in nature


The case, only constructed after the fourth moulting, is made of maximal 3 seed capsules spun together.
See also

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The eggs are deposited on the flowers of the food plant. These flowers are also the initial food source for the young larvae.
Later on, after the 4th moult, the larva feeds on the ripe seeds where it then lives in a case made of maximal 3 seed capsules.
Exceptionally, this species has two generations a year but, in general, there is only one generation and the larvae pass the winter in diapause.

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Flight periods

The moths fly from May till the end of August, exceptionally in 2 generations.

Observed on

Host plant (species):
Trifolium repens

Monophagous on Trifolium repens.

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This species is mostly found on waste grounds and roadsides.

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