Seq # 115050020

Fomoria weaveri (Stainton, 1855) Species

Last modified: Feb. 24, 2023, 5:10 p.m.

A very rare species in Belgium, probably overlooked.


Family: Nepticulidae > Genus: Fomoria > Species: Fomoria weaveri
Vernacular names
Vossenbesmineermot (NL), Cowberry Pigmy (EN)
First mention in Belgium
Janmoulle E. 1952c. Notes sur les Microlépidoptères de Belgique. IV. Quelques espèces nouvelles pour la faune belge ou peu connues. — Bulletin du Musée royal d'Histoire naturelle de Belgique 28(68): 1–8. On page 8. view page




Egg on underside of the leaf.

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The mine starts as a long gallery allmost completely filled with black frass, abruptly it changes to a large round blotch with black frass concentrated in the middle of the mine.

See also


It pupates in a orange to pale yellow cocoon inside the mine.

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Flight periods

The adults fly in one extended generation a year: from late April until August.

Observed on

Host plant (species):
Vaccinium vitis-idaea

The larve feeds on Vaccinium vitis-idaea.

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