# Cassida

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{{short description|Genus of beetles}}
{{Automatic taxobox
| image = P1080933 Cassida nebulosa.jpg
| image_caption = ''C. nebulosa''
| taxon = Cassida
| authority = [Linnaeus](/source/Carl_Linnaeus), [1758](/source/10th_edition_of_Systema_Naturae)
| display_parents = 3
| type_species =''[Cassida nebulosa](/source/Cassida_nebulosa)''
| type_species_authority = [Linnaeus](/source/Carl_Linnaeus), [1758](/source/10th_edition_of_Systema_Naturae)
| diversity_link = List of Cassida species
| diversity = at least 430 species
}}
thumb|''Cassida vibex''
thumb|''Cassida azurea''

'''''Cassida''''' is a large [Old World](/source/Old_World) [genus](/source/genus) of [tortoise beetle](/source/tortoise_beetle)s in the subfamily [Cassidinae](/source/Cassidinae). The natural history of Cassida sphaerula in South Africa is a typical life cycle.<ref>Adam S., M. Campos, H.D.C. Heron, C. Staines, R. Westerduijn, & C.S. Chaboo. 2022. Natural history notes of Cassida sphaerula Boheman, 1853 (Coleoptera: Chrysomelidae: Cassidini) on Arctotheca prostrata (Salisb.) Britten (Asteraceae) in South Africa. Insecta Mundi 095: 1-23.</ref> Several species of ''Cassida'' are important [agricultural pest](/source/agricultural_pest)s,<ref>Chaboo, C.S. 2007. Biology and phylogeny of the Cassidinae (tortoise and leaf-mining beetles) (Coleoptera: Chrysomelidae). Bulletin of the American Museum of Natural History 305:250pp.</ref> in particular ''[C. vittata](/source/Cassida_vittata)'' and ''[C. nebulosa](/source/Cassida_nebulosa)'' on [sugar beet](/source/sugar_beet) and [spinach](/source/spinach). The [thistle tortoise beetle](/source/thistle_tortoise_beetle) (''Cassida rubiginosa'') has been used as a [biological control agent](/source/biological_control_agent) against [Canada thistle](/source/Canada_thistle).

The genus name is derived from Latin ''Cassis'' for a metal helmet.

There are at least 430 described species in ''Cassida''.<ref name=gbif/><ref name=bugref/> This genus contains the most species of all Cassidinae.<ref>{{cite book |author1=Boroweic, L. |date=1999 |title=A world catalogue of the Cassidinae (Coleoptera: Chrysomelidae). Biologica Silesiae}}</ref> Larvae build shields with their feces and exuviae, a widespread pattern of tortoise beetles.<ref>Chaboo, C.S., S. Adam, K. Nishida, L. Schletzbaum. 2023. Architecture, construction, retention, and repair of fecal shields in three tribes of tortoise beetles (Insecta: Coleoptera: Chrysomelidae Cassidinae: Cassidini, Mesomphaliini, Spilophorini). ZooKeys Special Issue, Research on Chrysomelidae 9. ZooKeys 1177: 87–146. DOI: 10.3897/zookeys.1177.102600</ref>

==See also==
* [List of Cassida species](/source/List_of_Cassida_species)

==References==
{{Reflist|refs=
<ref name=gbif>
{{Cite web| title=''Cassida''
| url=https://www.gbif.org/species/1048148
| website=GBIF
| access-date=2018-04-25
}}</ref>
<ref name=bugref>
{{Cite web| title=''Cassida'' Genus Information
| url=https://bugguide.net/node/view/13537
| website=BugGuide.net
| access-date=2018-04-25
}}</ref>
}}

==Further reading==
{{refbegin}}
* {{Cite journal
| last1 = Bouchard | first1 = Patrice
| last2 = Bousquet | first2 = Yves
| last3 = Davies | first3 = Anthony E.
| last4 = Alonso-Zarazaga | first4 = Miguel A.
| last5 = Lawrence | first5 = John F.
| display-authors = 4
| date = 2011
| title = Family-group names in Coleoptera (Insecta)
| journal = ZooKeys
| publisher = Pensoft Publishers
| issue = 88
| pages = 1–972
| issn = 1313-2989
| doi = 10.3897/zookeys.88.807
| pmid = 21594053
| pmc = 3088472
| doi-access = free
| bibcode = 2011ZooK...88....1B
}}
* {{Cite book
| last1 = Clark | first1 = S. M.
| last2 = Le Doux | first2 = D. G.
| last3 = Riley | first3 = E. G.
| last4 = Gilbert | first4 = A. J.
| last5 = Sullivan | first5 = J. M.
| display-authors = 4
| date = 2004
| title = Host Plants of Leaf Beetle Species Occurring in the United States and Canada
| publisher = Coleopterists Society
| isbn = 9780972608732
}}
* {{Cite book
| last1 = LeConte | first1 = J. L.
| date = 1861
| title = Classification of the Coleoptera of North America
| url = https://www.biodiversitylibrary.org/item/85732
| series = Smithsonian Miscellaneous Collections
| publisher = Smithsonian Institution
| volume = 3
| issue = 136
| isbn = 0665100558
| doi = 10.5962/bhl.title.38459
| doi-access = free
}}
{{refend}}

==External links==
{{refbegin}}
* {{Commons-inline}}
{{refend}}
{{clear}}

{{Taxonbar|from=Q1306285}}

Category:Chrysomelidae genera
Category:Cassidinae
Category:Animal taxa named by Carl Linnaeus
Category:Cassida

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Adapted from the Wikipedia article [Cassida](https://en.wikipedia.org/wiki/Cassida) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Cassida?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.