Oxychalepus externus

Oxychalepus externus
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Coleoptera
Suborder:	Polyphaga
Infraorder:	Cucujiformia
Family:	Chrysomelidae
Genus:	Oxychalepus
Species:	O. externus
Binomial name
	Oxychalepus externus; (Chapuis, 1877)
Synonyms
	Odontota externa Chapuis, 1877; Xenochalepus confinis Weise, 1911; Chalepus (Xenochalepus) confinis boliviaca Weise, 1911; Odontota ventralis Chapuis, 1877;

Oxychalepus externus is a species of beetle of the family Chrysomelidae. It is found in Argentina, Bolivia, Brazil (Rio de Janeiro, São Paulo), Colombia, French Guiana, Paraguay, Peru, Suriname and Venezuela.

Description

Adults reach a length of about 6.1–9.6 mm. They have a black head and antennae, while the pronotum is yellow, with a black medial band and two black lateral bands. The elytron is black, with a yellow oval spot and a yellow postmedial band.^[1]

Biology

They have been recorded feeding on Inga affinis, Solanum auriculatum, Canavalia ensiformis, Canavalia spontanea, as well as Dioclea, Cimbosema and Phaseolus species.^[2]

References

^ Staines, C.L. (2010). "A review of the genus Oxychalepus Uhmann, 1937 (Coleoptera: Chrysomelidae: Cassidinae)" (PDF). Zootaxa. 2573. Magnolia Press: 35–56. Retrieved September 4, 2025.
^ Staines, C.L. (2012). "Hispines of the World: Tribe Chalepini" (PDF). USDA/APHIS/PPQ Science and Technology and National Natural History Museum. Retrieved August 26, 2025.

[1] Staines, C.L. (2010). "A review of the genus Oxychalepus Uhmann, 1937 (Coleoptera: Chrysomelidae: Cassidinae)" (PDF). Zootaxa. 2573. Magnolia Press: 35–56. Retrieved September 4, 2025.

[2] Staines, C.L. (2012). "Hispines of the World: Tribe Chalepini" (PDF). USDA/APHIS/PPQ Science and Technology and National Natural History Museum. Retrieved August 26, 2025.

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