Plant Parasites of Europe

leafminers, galls and fungi

Stathmopoda pedella

Stathmopoda pedella (Linnaeus, 1761)

alder signal

on alder

Stathmopoda pedella

Haarlemmermeer, 4.vii.2020 © Laurens van der Linde

Stathmopoda pedella



In August-September the larvae live as borers in the still green female catkins, feeding on te seeds. Infected catkins sometimes have a weak discolouration, but otherwise only a little entrance hole and a bit of extruded frass betray their presence. Full grown larvae drop to the ground for pupation.

host plants

Betulaceae, monophagous

Alnus glutinosa, incana.

distribution within Europe

(PESI, 2019).

egg, larva, pupa

see Schmid.


Corley, Rosete, Romão ao (2015a), Emmet & Langmaid (2002b), Hellers (1998a), Klimesch (1960a), Koster & Sinev (2003a), Parsons (1995a), Pollard (2011a), Schmid (2019a).

Last modified 22.viii.2023