Synanthedon spheciformis (Denis & Schiffermüller, 1775)

white-barred clearwing

on Alnus, Betula

parasite

The larva makes an u to 30 cm long tunnel in the wood of the lower part a young tree. The presence of the larva is betrayed by a mass of reddish, later brownish yellow sawdust that is extruded from the gallery.

host plants

Betulaceae, oligophagous

Alnus glutinosa, incana, viridis; Betula pendula, pubescens.

Most records by far come from Alnus.

phenology

The larva lives for two or three years. Pupation in spring in the gallery, not in a cocoon.

distribution within Europe

(PESI, 2018).

larva, pupa

Larva and pupa are extensively described by Bąkowski.

references

Aistleitner (2004a), Bachelard (2014a), Bąkowski (2013b), Bąkowski, Celadyn, Hołowiński & Zajda (2011a), Bartsch (1992a), Ebert (ed., 1997a), Kusdas & Reichl (eds, 1974a), Laštůvka & Laštůvka (2001a, 2014c), Predovnik (2018a), De Prins & Steeman (2011a), Sage (2005a).

mod 3.i.2019