Corizus hyoscyami

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Corizus hyoscyami
Rhopalidae - Corizus hyoscyami.JPG
Corizus hyoscyami subs. hyoscyami
Rhopalidae - Corizus hyoscyami nigridorsum.JPG
Corizus hyoscyami subs. nigridorsum
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hemiptera
Suborder: Heteroptera
Infraorder: Pentatomomorpha
Superfamily: Coreoidea
Family: Rhopalidae
Subfamily: Rhopalinae
Genus: Corizus
Species: C. hyoscyami
Binomial name
Corizus hyoscyami
(Linnaeus, 1758)
  • Corizus hyoscyami hyoscyami (Linnaeus, 1758)
  • Corizus hyoscyami nigridorsum (Puton, 1874)

Corizus hyoscyami is a species of scentless plant bug belonging to the family Rhopalidae, subfamily Rhopalinae. Commonly called the "cinnamon bug" or "black & red squash bug".[1]


  • Corizus hyoscyami hyoscyami (Linnaeus, 1758)
  • Corizus hyoscyami nigridorsum (Puton, 1874)


Corizus hyoscyami subs. hyoscyami is found in most of Europe; in Britain, the species appears to be spreading northwards, having been recorded in Yorkshire.[2][3] Corizus hyoscyami subs. nigridorsum is present in Spain, Italy, Morocco and Tunisia.[1]

Lateral view


Adults of Corizus hyoscyami are about 9 millimetres (0.35 in) long. Like all scentless plant bugs, it lacks well-developed scent glands and can be distinguished by numerous veins in the membrane of the hemelytra, characteristic of all members of the Rhopalidae.

In Corizus hyoscyami subs. hyoscyami the third and fourth abdominal tergites are red, while in Corizus hyoscyami subs. nigridorsum they are completely black. The dorsum colours are visible in elitrale transparency under the membrane.

Although striking in colour, Corizus hyoscyami may be confused with the similarly marked but unrelated Pyrrhocoris apterus (firebug) (see comparison).[4]

Comparison of Pyrrhocoris and Corizus
Corizus hyoscyami 


The species is a plant feeder on a wide range of plants. Adults can be found all year around. This species overwinters as an adult. The new generation appears in August–September.

Adult: All year


  1. ^ a b "Cinnamon Bug - Corizus hyoscyami". Brickfields Country Park. 13 August 2015. Retrieved 15 August 2015. 
  2. ^ "Corizus hyoscyami hyoscyami (Linnaeus, 1758)". 2.5. Fauna Europaea. July 23, 2012. Retrieved February 20, 2013. 
  3. ^ "Corizus hyoscyami". British Bugs. Retrieved 15 August 2015. 
  4. ^ Brickfields Country Park: Cinnamon Bug - Corizus hyoscyami


  • Dolling, W. R. (2006). "Superfamily Coreoidea: Corizus hyoscyami". In Aukema, Berend; Rieger, Christian. Catalogue of the Heteroptera of the Palaearctic Region. 5, Pentatomomorpha II. Amsterdam: Netherlands Entomological Society. pp. 12–13. ISBN 978-90-71912-28-3. 

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