Cleonis pigra, the sluggish weevil or large thistle weevil, is a weevil species recorded in Britain and native to Eurasia.

It was introduced into North America to help control creeping thistle.

[1] This species develops in the roots of plants in the family Asteraceae.

[2] It appears spelled different ways in the literature: Cleonis piger, Cleonus piger, Cleonus pigra,[1] but the correct spelling under ICZN Article 31.2 is Cleonis pigra[3] It is identified by double V-pattern elytra and a rostrum with three sulci.

This Curculionidae-related article is a stub.