Formotosena is a genus of cicadas from Southeast Asia erected by Kato in 1925 to accommodate the species Formotosena seebohmi which was previously placed in the genus Tosena.Kato, M. 1925. Japanese Cicadidae, with descriptions of some new species and genera. Transactions of the Natural History Society of Formosa 15:55-76 Members of Formotosena are found in Southeast Asia, including southern China, Hainan and Taiwan.

List of species Species accepted as of January 2025: Formotosena maculata Wang, Hayashi & Wei, 2024 Formotosena montivaga (Distant, 1889) Abstract Formotosena pervalida Wang, Hayashi & Wei, 2024 Formotosena seebohmi (Distant, 1904) - type species Formotosena sumboomi Boulard, 2013

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