Seq # 185130010

Calybites phasianipennella (Hübner, 1813) Species

Last modified: July 11, 2023, 7:57 a.m.

A fairly common species in Belgium.


Family: Gracillariidae > Subfamily: Gracillariinae > Tribus: Gracillariini > Genus: Calybites > Species: Calybites phasianipennella
Vernacular names
Viervleksteltmot (NL), Little slender (EN)
First mention in Belgium
De Fré Ch. 1858. Catalogue des Microlépidoptères de la Belgique. — Annales de la Société entomologique belge 2: 45–162. On page 146 (as G.[racillaria] Phasianipennella H.). view page




Wingspan: 10–11 mm.
The usual form has a brownish grey ground colour and four whitish-yellow spots, two on the costa and two on the dorsum. However, a unicolorous brownish-grey form without any pattern also occurs not very rarely.

Museum specimens

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Specimens in nature


The larva first lives in a small, hard to observe gallery at the underside of the leaf which is later enlarged into a small, transparant blotch mine.

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At first in a small transparant blotch mine at the underside of the leaf in which the frass is concentrated at one side of the mine. The full-grown instar turns the tip of a leaf into a roll.
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A whitish silken cocoon.

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At first a small gallery, then a whithish blotch and later on a leaf roll, made by cutting part of a leaf and rolling that part up and spinning it to the leaf.
Pupation takes place in the leaf roll where the larva first spins a whitish silken cocoon.
The species hibernates in the adult stage. The adults come to light.

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Flight periods

The moths fly from August till early June in one generation per year.

Observed on

Host plant (species):
Polygonum hydropiper, Persicaria maculosa, Rumex acetosa, Rumex acetosella, Rumex hydrolapathum, Lysimachia vulgaris and

The larvae feed on: Polygonum, Rumex or Lysimachia. Also other plants can be chosen but much less frequently.

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The species prefers rather wet habitats where the foodplants grow, like meadows, river banks, etc.

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