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Cleonis pigra
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Coleoptera
Family:	Curculionidae
Genus:	Cleonis
Species:	C. pigra
Binomial name
Cleonis pigra (Scopoli, 1763)
Synonyms
Cleonus piger Scopoli, 1763 Curculio centaureae Allioni, 1766 Curculio sulcirostris Linnaeus, 1767 Curculio transversofasciatus Goeze, 1777 Cleonus indicus Fahraeus, 1842 Bothynoderes caucasicus Chevrolat, 1873

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. This species develops in the roots of plants in the family Asteraceae.

It appears spelled different ways in the literature: Cleonis piger, Cleonus piger, Cleonus pigra, but the correct spelling under ICZN Article 31.2 is Cleonis pigra

It is identified by double V-pattern elytra and a rostrum with three sulci.

References

1. ^ bugguide.net
2. Skuhrovec, J., Volovnik, S., Gosik, R., Stejskal, R., and Trnka, F. Cleonis pigra (Scopoli, 1763) (Coleoptera: Curculionidae: Lixinae): morphological re-description of the immature stages, keys, tribal comparisons and biology // Insects, 2019, 10 (9): 325 (1–25) (with) — https://www.mdpi.com/2075-4450/10/10/325/pdf
3. ICZN Online

Further reading

• Lobl, I.; Smetana, A., eds. (2013). Catalogue of Palaearctic Coleoptera, Volume 7: Curculionoidea I. Apollo Books. ISBN 978-90-04-26093-1.
• Lobl, I.; Smetana, A., eds. (2013). Catalogue of Palaearctic Coleoptera, Volume 8: Curculionoidea II. Apollo Books. ISBN 978-90-04-25916-4.

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• Lixinae
• Insects used for control of invasive plants
• Biological pest control beetles
• Beetles described in 1763
• Taxa named by Giovanni Antonio Scopoli
• Curculionidae stubs