Platygonia Melichar, 1925 (Insecta: Hemiptera: Cicadellidae: Cicadellini): a new species from the Brazilian Amazon Rainforest, key to species of the genus, and notes on P. undecimmaculata (Fowler, 1899) Author Quintas, Victor D2BAB10F-6177-4FE6-987F-BB6C2A61B0EB Programa de Pós-graduação em Zoologia (PPgZoo), Museu Nacional, Universidade Federal do Rio de Janeiro (UFRJ), 20940 - 040, Rio de Janeiro, RJ, Brasil. & Departamento de Entomologia, Museu Nacional, Universidade Federal do Rio de Janeiro (UFRJ), 20940 - 040, Rio de Janeiro, RJ, Brasil. victorquintas@ufrj.br Author Pecly, Nathalia H. F0755CC2-6B03-4F07-A154-1AFDA29D3FE7 Programa de Pós-graduação em Zoologia (PPgZoo), Museu Nacional, Universidade Federal do Rio de Janeiro (UFRJ), 20940 - 040, Rio de Janeiro, RJ, Brasil. & Departamento de Entomologia, Museu Nacional, Universidade Federal do Rio de Janeiro (UFRJ), 20940 - 040, Rio de Janeiro, RJ, Brasil. nathaliahiluy@ufrj.br Author Carvalho, Stéphanie R. B64859F7-A19B-4470-954A-C92EFCADC0DD Departamento de Entomologia, Museu Nacional, Universidade Federal do Rio de Janeiro (UFRJ), 20940 - 040, Rio de Janeiro, RJ, Brasil. stephanie.riehl@gmail.com Author Mejdalani, Gabriel DE1C60FA-FB28-4F73-B316-18E901D5783D Departamento de Entomologia, Museu Nacional, Universidade Federal do Rio de Janeiro (UFRJ), 20940 - 040, Rio de Janeiro, RJ, Brasil. mejdalan@acd.ufrj.br text European Journal of Taxonomy 2022 2022-03-31 806 1 177 186 http://dx.doi.org/10.5852/ejt.2022.806.1715 journal article 20012 10.5852/ejt.2022.806.1715 62d1e1d2-625f-422c-ae53-2992e7a340aa 2118-9773 6402870 CF16D797-18E1-45E4-84F5-164BD6D3C6FE Notes on Platygonia undecimmaculata ( Fowler, 1899 ) , reinstated combination Tettigonia undecimmaculata was described by Fowler (1899) ( Fig. 7 ) based on one female ( holotype ) ( Fig. 8 ) from the Province of Chiriquí , Panama ( Young 1965 ). Melichar (1925) transferred T . undecimmaculata to Platygonia . Young (1977: 1105) studied the holotype and stated that this species was “possibly correctly placed in Platygonia as Melichar decided.” Nevertheless, Young (1977) did not formally include T . undecimmaculata in Platygonia , preferring to treat it as a species of uncertain position. This action was followed by McKamey (2007: 343) , who, however, misspelled the specific name (“ unidecimmaculata ”). The species reappeared as a member of Platygonia in Wilson et al. (2009) . Based on the triangular crown of the holotype , which is strongly produced anteriorly ( Fig. 8 ), it appears to us that the inclusion of T . undecimmaculata in Platygonia might be correct. Accordingly, we have tentatively included the species in our key. Likewise, based on the color pattern of the holotype (see Wilson et al. 2009 ), which has no abdomen, hind wings, and metathorax ( Young 1965 ), we have attempted to include P. zea ( Ecuador ) in the key; the latter species was not included in Young’s (1977) key to Platygonia species.