Chamaesphecia palustris Kautz, 1927
De larva bores in the roots. In the autumn the full grown larva makes an up to 40 cm long tunnel up in the stem of the plant, and prepares an exit opening. He hibernates back in the roots, but pupates in the spring, without forming a cocoon, close to the exit opening.
Th larva lives for one year.
distribution within Europe
Toševski, Gassmann & Schroeder (1996a), Laštůvka & Laštůvka (2001a), Predovnik (2018a), Pühringer (2004a).