Plant Parasites of Europe

leafminers, galls and fungi

Byctiscus betulae

Byctiscus betulae (Linnaeus, 1758)

vine leaf roller

polyphagous on woody plants

Byctiscus betulae: leaf roll on Tilia platyphyllos

Tilia platyphyllos, Hungary, Budapest, arboretum, 10.v.2019 © László Érsek

Byctiscus betulae: leaf roll on Tilia platyphyllos

the petioles have been partly severed at their base

Byctiscus betulae: larva

larva dorsal,

Byctiscus betulae: larva

ventral

Byctiscus betulae: leaf roll on Pyrus communis

Pyrus communis, Belgium, prov. Antwerp, Mol, 16.v.2015 © Carina Van Steenwinkel

Byctiscus betulae: leaf roll on Salix caprea

Salix caprea, Belgium, prov. Limbourg, Meldert, Schurfert, 12.vi.2020 © Carina Van Steenwinkel

Byctiscus betulae: leaf roll on  Populus tremula

Populus tremula, Belgium, prov. Limbourg, Maasmechelen, Maaswinkel, 7.vi.2020 © Carina Van Steenwinkel

Byctiscus betulae: larva

two or three larvae per roll

Byctiscus betulae: frass

frass

Byctiscus betulae: leaf roll on Fagus sylvatica

Fagus sylvatica © Milan Zubrik, Forest Research Institute – Slovakia, Bugwood.org

Byctiscus betulae: leaf roll on  Tilia spec.

Tilia spec. © Belgium, prov. Antwerp, Balen, de Most, 28.iv.2017 © Carina Van Steenwinkel: fresh roll

parasite

In spring and autumn the adult beetles feed on the leaves, by shaving characteristic narrow strips of the upper side of the leaves. The female produces on average some 50 eggs, distributed over the 10-15 leaf rolls that she makes in her lifetime. For each roll she prepares a young shoot by gnawing a wound at its base, causing it to wilt. sometimes she also bits in the individual petioles on the shoot. As soon as the leaves have sufficiently lost their turgor she rolls 3-5 leaves together into s cigar-shaped roll, depositing sone eggs between the leaves. Normally the roll rather soon drops to the ground. The larvae develop in the roll; once full fed they crawl into the soil in order to pupate. After about two weeks a new generation of beetles appears.

host plants

Acer; ; Alnus glutinosa; Betula pendula; Carpinus; Castanea sativa; Corylus avellana; Cydonia oblonga; Fagus sylvatica; Malus; Populus tremula; Prunus; Pyrus communis; Rubus idaeus; Salix caprea; Sorbus; Tilia cordata, platyphyllos; Ulmus; Vitis vinifera.

Main are Fagus, Populus, Salix, Tilia, Vitis.
Records from Crataegus; Quercus; Rosa are dubious.

phenology

Univoltine, hibernation as adult.

distribution within Europe

(PESI, 2019).

references

Antonie, Teodorescu & Oprean (2006a), Dieckmann (1974a), Legalov & Friedman (2007a), Reinheimer & Hassler (2010a), Trdan & Valič (2004a), Urban (2015a).

Last modified 10.vii.2020