Plant Parasites of Europe

leafminers, galls and fungi

Acalitus plicans

Acalitus plicans (Nalepa, 1917)

on Fagus

Acalitus plicans: gall on Fagus sylvatica

Fagus sylvatica, Belgium, prov. Namur, Dourbes, Montagne aux Buis, 31.vii.2018 © Stéphane Claerebout

Acalitus plicans: gall on Fagus sylvatica



leaf abnormally narrow, the conspicuously thickened and strongly hairy veins therefore run parallel, the leaf in between is pleated. Often only the apical part of the leaf is affected.

host plants

Fagaceae, monophagous

Fagus sylvatica.


Aceria, stenaspis, plicans.


see Epitrimerus fagi, Monochetus sulcatus.


Béguinot (2007b), Bellmann (2012a), Buhr (1964b), Chinery (2011a), Dauphin & Aniotsbehere (1997a), Farkas (1965a), Roskam (2009a), Tomasi (2014a), Vaněčková-Skuhravá (1996a), Weidner (1954a), Xue, Wang, Song & Hong (2009a).

Last modified 27.ii.2020