Chamaesphecia empiformis (Esper, 1783)
Oviposition on a leaf high in the plant. The young larva descends in an tunnel down to the root crown, next lives as a borer in the roots
Euphorbiaceae, narrowly monophagous
The larva lives for one year, hibernates in its gallery and pupates there in the spring.
distribution within Europe
Larva and pupa are extensively described by Bąkowski.
Aistleitner (2004a), Bachelard (2014a), Bąkowski (2013b), Bartsch (1992a), Ebert (ed., 1997a), Kolbeck & Loos (1995a), Kusdas & Reichl (eds, 1974a), Laštůvka & Laštůvka (2001a, 2017a), Predovnik (2010a), Sage (2005a), Toševski, Gassmann & Schroeder (1996a).