A new species of planthopper in the genus Myconus (Hemiptera: Auchenorrhyncha: Fulgoroidea: Achilidae) from the Los Angeles Cloud Forest, Costa Rica Author Zumbado Echavarria, Marco A. Author Barrantes Barrantes, Edwin A. Universidad of Costa Rica-Sede San Ramón, Departmento de Ciencias Naturales, de la Iglesia el Tremedal 400 mts al Oeste carretera hacia San Pedro, San Ramón, Alajuela, Costa Rica. Author Bartlett, Charles R. University of Delaware, Department of Entomology and Wildlife Ecology, 250 Townsend Hall, Newark, DE 19716 - 2160, USA. Author Helmick, Ericka E. University of Florida, Department of Entomology and Nematology-Fort Lauderdale Research and Education Center; 3205 College Ave., Davie, FL 33314 - 7719, USA. Author Bahder, Brian W. University of Florida, Department of Entomology and Nematology-Fort Lauderdale Research and Education Center; 3205 College Ave., Davie, FL 33314 - 7719, USA. text Zootaxa 2022 2022-04-19 5128 1 129 141 journal article 55853 10.11646/zootaxa.5128.1.8 ef40cc85-e479-4f66-b8cf-e1fe15eb7d2a 1175-5326 6479696 2A6C3DB8-C6E0-4AF9-BFB2-A3DC22AAEFED Genus Myconus Stål 1862 Type species: Achilus conspersinervis Stål 1862 Diagnosis. General color mottled brown olive; tegmina with ~10 irregular deep chestnut markings between A1 and wing margin. Male terminalia with gonostyli broad, distal process broad and roughly quadrate. Pygofer with medioventral broadly triangular. Aedeagus strongly upcurved distally with pair of elongate dorsal process and pair of short ventral hooked processes sub-basally. Anal tube in lateral view with elongate curved apex.