Seq # 510120010

Cymatophorina diluta (Denis & Schiffermüller, 1775) Species

Last modified: Oct. 18, 2023, 3:55 p.m.

A not so common and local species throughout Belgium. Observations are less in the north, more common in the south of the country, especially in the Calestienne area, where they are not that rare.


Family: Drepanidae > Subfamily: Thyatirinae > Genus: Cymatophorina > Species: Cymatophorina diluta
Vernacular names
Eiken-orvlinder (NL), Oak Lutestring (EN), La Cymatophore délayée, la Diluée (FR), Violettgrauer Eulenspinner (DE)
First mention in Belgium
De Sélys-Longchamps E. 1844. Énumération des insectes Lépidoptères de la Belgique. — Mémoires de la Société royale des Sciences de Liége 2: 1–35. On page 10 (as Cymatophorima diluta F.). view page




Museum specimens

Specimens in nature


The species hibernates as an egg attached to a twig of the food plant. The adults come to light and sugar.

No pictures yet!

Flight periods

The adults fly in one generation a year from late July to mid-October.

Observed on

Host plant (genera):

The larva lives on Quercus.

No pictures yet!