Ceutorhynchus obstrictus (Marsham, 1802)
cabbage seed pod borer
The female deposits her eggs in developing siliquae; the larvae feed on the seeds. Pupation in the soil; univoltine.
Brassicaceae, broadly oligophagous: actually on all species with not too small siliquae
Brassica napus, rapa.
Larvae from May on.
distribution within Europe
All of Europe (PESI, 2018).
Because of an unhappy conflict in the nomenclature, this species was long known as C. assimilis. Now that name is applied to another species that is equally common and noxious, but has a completely different biology.
Important pest in the canola oil production
Delbol (2013a), Muller, Dosdall, Mason & Kuhlmann (2011a), Rheinheimer & Hassler (2010a).