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of the Lepidoptera of Belgium

Gypsonoma dealbana (Frölich, 1828)

A common species throughout Belgium.

The larva lives after hibernation in a shoot or between spun leaves on Crataegus, Alnus, Betula, Quercus or Corylus. It has also been found in the catkins of Populus or Salix. Pupation in a cocoon in the larval habitation or in the soil.

The adults have been observed early June till the end of August. They are active at dusk and later come to light. 

ID: this is the most variable of the Gypsonoma species in general coloration and clarity of the forewing markings. The white ground color can be extensively overlaid by a plumbeous or brownish grey suffusion (see More pictures) with markings less distinct and often partially obscured. The nominate form (the one with the white ground color) resembles G. sociana, but can be distinguished by the cream-white frons and vertex of the head, which in G. sociana are clear white.

Belgium, Antwerpen, Kalmthout, 30 June 2004.
(Photo © Chris Steeman)

Comments to Willy De Prins or Chris Steeman
© Flemish Entomological Society