HomeGuideID RequestRecentFrassForumsDonateHelp

Clickable Guide

Calendar

Upcoming Events

Photos of insects and people from the 2024 BugGuide gathering in Idaho July 24-27

Moth submissions from National Moth Week 2024

Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

Photos of insects and people from the 2018 gathering in Virginia, July 27-29

Previous events

TaxonomyBrowse

Info

ImagesLinksBooksData

Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Beetles (Coleoptera) » Polyphaga » Series Cucujiformia » Curculionoidea » Snout and Bark Beetles (Curculionidae) » Minute Seed Weevils (Ceutorhynchinae) » Ceutorhynchini » Hadroplontus » Canada Thistle Stem Weevil (Hadroplontus litura)

Species Hadroplontus litura - Canada Thistle Stem Weevil

Classification · Other Common Names · Synonyms and other taxonomic changes · Explanation of Names · Size · Range · Habitat · Food · Life Cycle · Remarks · Internet References · Works Cited

not Dietzella weevil - Hadroplontus litura

Hadroplontus litura? - Hadroplontus litura

Classification

Kingdom Animalia (Animals)

Phylum Arthropoda (Arthropods)

Subphylum Hexapoda (Hexapods)

Class Insecta (Insects)

Order Coleoptera (Beetles)

Suborder Polyphaga

No Taxon (Series Cucujiformia)

Superfamily Curculionoidea

Family Curculionidae (Snout and Bark Beetles)

Subfamily Ceutorhynchinae (Minute Seed Weevils)

Tribe Ceutorhynchini

Genus Hadroplontus

Species litura (Canada Thistle Stem Weevil)

Other Common Names

Canadian Thistle Stem Weevil

Synonyms and other taxonomic changes

Ceutorhynchus litura

Explanation of Names

Hadroplontus litura (Fabricius 1775)

Size

3.0-3.7 mm(1)

Range

native to w. Palaearctic(2), intentionally introduced in NA and now widespread across Canada & n. US (VA-NE-OR)(3)(4)

Habitat

disturbed areas with high thistle density(4)

Food

hosts: Cirsium spp., esp. C. arvense (Canada thistle); occasionally Carduus defloratus(2)(4)

Life Cycle

one generation per year(4)

Remarks

introduced to combat invasive thistles(3), first to Canada (1965), then to the US (early 1970s)(4)

Internet References

Fact sheets: Early & Frazer (2002-2008) (MT)(5) | anon. (BC)(6) | McClay (2002)(7)

Works Cited

1.	Benisch C. (2007-) kerbtier.de – Beetle fauna of Germany

2.	Catalogue of Ceutorhynchinae of the world, with a key to genera (Insecta Coleoptera Curculionidae) Colonnelli E. 2004. Argania Editio, Barcelona. 124 pp.

3.	American Beetles, Volume II: Polyphaga: Scarabaeoidea through Curculionoidea Arnett, R.H., Jr., M. C. Thomas, P. E. Skelley and J. H. Frank. (eds.). 2002. CRC Press LLC, Boca Raton, FL.

4.	Identification tool for weevil biological control agents of aquatic and terrestrial weeds in the United States and Canada

5.	Breitenfeldt T., ed. (1999-) Montana war on weeds

6.	Invasive plants with biocontrol -- BC Ministry of Forests, Lands and Natural Resource Operations

7.	Biological control of invasive plants in the eastern United States Van Driesche R., et al. 2002. USDA Forest Service Publication FHTET-2002-04. Morgantown, WV. 413 pp.

Contributed by v belov on 2 January, 2014 - 9:19am
Additional contributions by Beatriz Moisset
Last updated 5 June, 2016 - 5:58pm

Disclaimer: Dedicated naturalists volunteer their time and resources here to provide this service. We strive to provide accurate information, but we are mostly just amateurs attempting to make sense of a diverse natural world. If you need expert professional advice, contact your local extension office.

Contributors own the copyright to and are solely responsible for contributed content.
Click the contributor's name for licensing and usage information.
Everything else copyright © 2003-2025 Iowa State University, unless otherwise noted.

Bugguide is hosted by:

Printer Friendly Version