Seq # 275020190

Coleophora badiipennella (Duponchel, 1843) Species

Last modified: Nov. 18, 2023, 4:19 p.m.

This is a fairly rare and local species in Belgium. Populations are scarce, because of the Dutch elm (Ulmus) disease.


Family: Coleophoridae > Genus: Coleophora > Species: Coleophora badiipennella
Vernacular names
Iepenkokermot (NL), Pale elm case-bearer (EN), Ulmen-Sackmotte (DE)
First mention in Belgium
De Fré Ch. 1860. Lépidoptères nouvellement découverts en Belgique. — Annales de la Société entomologique belge 4: 113–115. On page 114. view page




Wingspan: 9–11 mm.
In this species the forewing is whole-coloured yellow-brown with dark dots on the entire wing.
The antennae are ringed alternately white and brown till the tip.

Museum specimens

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Specimens in nature

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The final spatula-shaped case is a small, laterally compressed and bi-valved one having a strikingly broad rear end and measures 5–6 mm. It is constructed by the larva from a leaf fragment cut from the hostplant and its dorsal keel often shows some serrations which are the remnants of the leaf edge. The mouth angle is 0–10°.
See also


The eggs are deposited at the underside of a leaf. The juvenile larvae mine inside a straight gallery, about 10–15 mm in length, before they start constructing a case.
The larvae are full-grown in September or October. In springtime, after hibernation, they still resume feeding before pupating inside their case in May or June.

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Flight periods

The moths fly in one generation in June and July.

Observed on

Host plant (genera):
Ulmus, Acer, Corylus and Fraxinus

Ulmus is by far the most important food plant, although the species has also been recorded on: Acer, Corylus and Fraxinus.

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