Seq # 185190050

Parornix fagivora (Frey, 1861) Species

Last modified: Jan. 6, 2022, 11:33 a.m.

A rare species throughout Belgium.


Family: Gracillariidae > Subfamily: Gracillariinae > Tribus: Parornichini > Genus: Parornix > Species: Parornix fagivora
Vernacular names
Beukenzebramot (NL), Beech slender (EN)
First mention in Belgium
Fologne E. 1862c. Notes sur quelques lépidoptères observés en Belgique. — Annales de la Société entomologique belge 6: 170–176. On page 174. view page




Forewing greyish with a row of small, inconspicuous, whitish striae along the costa; some brown spots near the inner margin. Identification very difficult without knowledge of the larval host plant, because of the resemblance with the other Parnornix species; study of the genitalia is necessary.

Museum specimens

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Specimens in nature



The first instar lives in a short, inconspicuous, gallery on the underside of the mine, only visible because of the reddish brown frass line; the gallery soon turns into a brownish blotch. The blackish frass is contained in a corner of the mine. Because the caterpillar spins only few silk, the mine remains almost flat.
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When the caterpillar leaves the mine, it folds the margin of a leaf tip downwards and fastens it wilk white silken threads. It continues feeding from within this fold, which after a while turns completely brown.
Pupation in the fold, among other fallen leaves on the ground during autumn. The species hibernates in the pupal stage.
The adults rest during daytime between the foliage or in cracks on the tree trunk. They become active towards dusk and at night. They come to light.

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Flight periods

Two generations a year: May–June and July–August.

Observed on

Host plant (species):
Fagus sylvatica

The species lives monophagously on Fagus sylvatica.

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Beech forests, gardens and parks with individual Fagus trees.

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