Chamaesphecia annellata (Zeller, 1847)
Oviposition high in the plant. From there the larva descends as a stem borer down to the root crown and the rhizome. Attacked plant can be recognised after much dirty white extruded sawdust near the base of the stem.
distribution within Europe
Larva and pupa are extensively described by Bąkowski.
Bąkowski (2013b), Ebert (ed., 1997a). Laštůvka & Laštůvka (2001a), Predovnik (2018a).