Seq # 185120080

Caloptilia hemidactylella (Denis & Schiffermüller, 1775) Species

Last modified: April 29, 2021, 3:24 p.m.

A very rare species throughout Belgium.


Family: Gracillariidae > Subfamily: Gracillariinae > Tribus: Gracillariini > Genus: Caloptilia > Species: Caloptilia hemidactylella
Vernacular names
Bonte esdoornsteltmot (NL), Sycamore 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 145. view page




Ground colour brown, a yellowish triangular patch in the middle of the costa, containing some scattered brown scales. Yellowish scales between this patch and the apex.

Museum specimens

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Specimens in nature


At first a very narrow and inconspicuous gallery on the underside along the edge of a leaf lobe, then turning into a blotch in which all the plant tissue is eaten, leaving only the pallisade tissue.
See also and

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Free living instars construct three consecutive cones from a leaf lobe. Pupation on the underside of a leaf under a white silken cocoon, most of the time near the last cone. The species hibernates in the adult stage. The adults come sparsely to light.

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Flight periods

The adults fly in two generations a year: during July and early August and again from September till May.

Observed on

Host plant (species):
Acer campestre and Acer pseudoplatanus

The larvae feed mainly on Acer campestre and to a much lesser extent on Acer platanoides.

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