Synonyms and other taxonomic changes
contrary to some reports, Ceutorhynchus assimilis does not occur in NA; its NA records probably refer to C. obstrictus
Explanation of Names
Ceutorhynchus obstrictus (Marsham 1802)
Range
native to Europe, adventive and widespread in NA (across so. Canada and much of the US)
(1)Food
adults feed on various Brassicaceae; larvae in
Brassica seedpods
(1)Remarks
serious pest of canola (
Brassica napus) and oilseed rape (
B. rapa) in North America; earliest record in our area: BC 1931
(2)