Seq # 275020010

Coleophora adjunctella Hodgkinson, 1882 Species

Last modified: Sept. 18, 2023, 5:43 p.m.

A very rare species in Belgium, mostly found as a case on the foodplant.


Family: Coleophoridae > Genus: Coleophora > Species: Coleophora adjunctella
Vernacular names
Egale ruskokermot (NL), Saltern-rush case-bearer (EN), Salzbinsen-Sackmotte (DE)
Coleophora paludicola Stainton, 1885
First mention in Belgium
Janmoulle E. 1969. Espèces nouvelles pour la faune belge (suite). — Lambillionea 67 (1967): 62–65, 92. On page 62.




Wingspan: 8–12 mm.
C. adjunctella is a rather small grey-brown moth with a lighter line along the costa reaching 2/3 of the wing length.
The antennae are ringed alternating white and brown till the tip.

Museum specimens

No pictures yet!

Specimens in nature



This species uses a seed of the host plant as its case.
See also


The eggs are laid on the flowers of the foodplant. The young caterpillar initially lives inside a seed of the host plant and, later on, uses an empty seed to move around and feed on the inside of other seeds.
So, this species is a seed-feeder. The caterpillar leaves its feeding place before wintertime and moves down to hibernate, mostly in leaf litter. There, it pupates in springtime.

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Flight periods

The moths fly from late May till the end of July, exceptionally till late August.

Observed on

Host plant (species):
Juncus gerardii

The larvae of this species feed monophagously on Juncus gerardii.

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