Two new species of Cyclocephala Dejean, 1821 (Melolonthidae: Dynastinae: Cyclocephalini) from the castanea species group

Authors

  • Fernando Paz-Ordoñez Universidade Federal Rural de Pernambuco, Programa de Pós-Graduação em Entomologia. Recife, PE, Brasil. , Universidade Federal Rural de Pernambuco, Departamento de Agronomia, Laboratório de Taxonomia de Insetos. Recife, PE, Brasil. , Universidad Nacional Mayor de San Marcos, Museo de Historia Natural, Departamento de Entomología. Lima, Perú. https://orcid.org/0000-0002-6331-4416 (unauthenticated)
  • Rubem Cláudio Simões-Vieira Universidade Federal Rural de Pernambuco, Programa de Pós-Graduação em Entomologia. Recife, PE, Brasil. , Universidade Federal Rural de Pernambuco, Departamento de Agronomia, Laboratório de Taxonomia de Insetos. Recife, PE, Brasil. https://orcid.org/0009-0004-8329-2607 (unauthenticated)
  • Paschoal Coelho Grossi Universidade Federal Rural de Pernambuco, Programa de Pós-Graduação em Entomologia. Recife, PE, Brasil. , Universidade Federal Rural de Pernambuco, Departamento de Agronomia, Laboratório de Taxonomia de Insetos. Recife, PE, Brasil. https://orcid.org/0000-0001-6601-5967 (unauthenticated)

DOI:

https://doi.org/10.11606/1807-0205/2026.66.special-issue-1.013

Keywords:

Brazil, Peru, Masked chafers, Amazonia, Pantanal

Abstract

The Cyclocephala castanea species group is formally delimited to include six South American species, including two here newly described: C. monnei sp. nov. from Corumbá municipality, Mato Grosso do Sul state, in the Pantanal domain, and C. figueroai sp. nov. from Iquitos province, Loreto department, Peru, in western Amazon. The other species are C. castanea (Olivier, 1789), C. hardyi Endrödi, 1975, and C. kuijteni Hielkema, 2023, from the Amazon, and C. pygidialis Joly, 2000, from Sabana province. The diagnosis for the species group is provided, along with a taxonomic key for adult males and an updated.

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References

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Published

2026-06-01

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Vol 66 Special Issue 1 (2026)

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Original Article

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Copyright (c) 2026 Fernando Paz-Ordoñez, Rubem Cláudio Simões-Vieira, Paschoal Coelho Grossi

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How to Cite

Paz-Ordoñez, F., Simões-Vieira, R. C., & Grossi, P. C. (2026). Two new species of Cyclocephala Dejean, 1821 (Melolonthidae: Dynastinae: Cyclocephalini) from the castanea species group. Papéis Avulsos De Zoologia, 66(special 1), e202666si1013. https://doi.org/10.11606/1807-0205/2026.66.special-issue-1.013