Oragua Melichar, 1926: key to species from southeastern Brazil and a new species from Rio de Janeiro State (Insecta: Hemiptera: Cicadellidae: Cicadellini)

ABSTRACT

A new species of Oragua Melichar, 1926 is described and illustrated from the Atlantic rainforest of Rio de Janeiro State, southeastern Brazil, based on specimens collected in Casimiro de Abreu (Oragua casimirensis n. sp.). The new species can be distinguished from the other species of the genus by the following combination of features: dorsum dark brown with dispersed yellow dots and spots; male pygofer with well developed dentiform process, directed inwards, on posterodorsal portion; subgenital plates subtriangular and elongate, expanded basally, not extending as far posteriorly as location of dentiform pygofer processes; aedeagus slender and elongate, with pair of apical processes weakly connected to shaft; paraphyses with rami elongate, slightly asymmetrical, approximately parallel to each other. A key to males of the six Oragua species recorded from southeastern Brazil is provided. We propose a group of species within Oragua (linnavuorii group) based on features of the male genitalia of O. flavolineata Mejdalani, Silva & Takiya, 2016, O. linnavuorii Mejdalani, Silva & Takiya, 2016, and O. casimirensis n. sp.

http://urn:lsid:zoobank.org:pub:38469659-F0A0-416D-8509-E594EDBA8277

KEYWORDS:

• Cicadellinae
• leafhopper
• Neotropical Region
• sharpshooter
• taxonomy

Acknowledgments

We are grateful to the Diptera laboratory of MNRJ, headed by Dr. M. S. Couri, whose team collected the type specimens of O. casimirensis. The manuscript benefited from the useful comments and corrections of A. C. Santos (MNRJ), Dr. R. R. Cavichioli (DZUP), Dr. A. Zillikens (Editor-in-Chief of SNFE), and an anonymous reviewer. R. R. Cavichioli kindly provided information on the distribution of Oragua species.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

Fellowships from Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) are acknowledged (M.Sc. to V. Quintas, PIBIC to N. Pecly, and research productivity to G. Mejdalani).