Plant Parasites of Europe

leafminers, galls and fungi

Byctiscus populi

Byctiscus populi (Linnaeus, 1758)

poplar leaf-rolling weevil

on Populus

Byctiscus populi on Populus alba

Populus alba, Hungary, Mosonmagyaróvár, 5.v.2012 © László Érsek

Byctiscus populi on Populus alba

female with beginning of a leaf roll

Byctiscus populi on Populus nigra

Populus nigra, Hungary, Mosonmagyaróvár, 9.v.2016 © László Érsek: the rol consists of a single leaf

Byctiscus populi on Populus x canadensis

Populus x canadensis, Hungary, Mosonmagyaróvár, 1.v.2012 © László Érsek

Byctiscus populi on Populus x canadensis

a single egg is deposited on the roll

Byctiscus populi: leaf rolls

© György Csóka, Hungary Forest Research Institute, Bugwood.org

parasite

The female usually deposits one egg in a leaf roll. A leaf roll consists of one, rarely two leaves that has been rolled into a tight cylinder. Before she has gnawed a wound in the petiole, causing the leaf lo loose its turgor. Generally, the leaf rolls soon drop to the ground. When the larva in the roll is full fed it crawls into the ground to pupate. The new beetle generation appears before the winter.

host plants

Salicaceae, monophagous

Populus alba, x canadensis, deltoides, nigra, tremula, trichocarpa.

Preference for young trees, suckers.

phenology

Univoltine; hibernation as imago.

distribution within Europe

(PESI, 2019).

references

Dieckmann (1974a), Heijerman & Tuinstra (2014a), Käfer Europas (2021), Rheinheimer & Hassler (2010a), Urban (2012a,b), Yunakov, Nazarenko, Filimonov & Volovnik (2018a).

Last modified 4.iii.2021