Toward a new classification of planthoppers Hemiptera Fulgoromorpha: 2. Higher taxa, their names and their composition Author Bourgoin, Thierry Institut Systématique Evolution Biodiversité (ISYEB), UMR 7205 MNHN-CNRS-UPMC-EPHE, Muséum National d’Histoire Naturelle, Sorbonne Université, 57 rue Cuvier, CP 50, 75005 Paris, France. Author Szwedo, Jacek Laboratory of Evolutionary Entomology and Museum of Amber Inclusions, Department of Invertebrate Zoology and Parasitology, Faculty of Biology, University of Gdańsk, 59, Wita Stwosza Street, PL 80 - 308 Gdańsk, Poland. text Zootaxa 2023 2023-06-06 5297 4 562 568 http://dx.doi.org/10.11646/zootaxa.5297.4.5 journal article 10.11646/zootaxa.5297.4.5 1175-5326 8009216 D7AA0FFA-56D9-4AB3-9086-89CE879402EB 2.4. Delphacoidea Leach, 1815 - Cixioïdes sec. Spinola, 1839 : subfamily: 202 [Cixcoïdes (sic!): 204. Including ‘Cixioïdes’+‘Delphacoïdes’ ( Spinola, 1839: 329 )] - Cixioidea Latreille, 1807 sec. Bourgoin & Szwedo, 2022 : superfamily: 952 [for Cixioidea Spinola, 1839 (sic!), Cixiioidea (sic!), corrected here as Delphacoidea Leach, 1815 ]. Type-genus: Delphax Fabricius, 1798 Type-species: Cicada crassicornis Panzer, 1796: 19 [by subsequent designation, ICZN, 1961: 246 ] Chronostratigraphic occurrence: Lower Cretaceous, Barremian (129.4±1.5 Ma to present). Oldest known fossil occurrence: Barremixius petrinus (Fennah, 1961) . Composition: 2.4.1. Cixiidae Spinola, 1839 2.4.2. Delphacidae Leach, 1815 2.4.3. Lalacidae Hamilton, 1990 Note. Delphacida was formally described by Leach (1815: 125) with type genus Delphax , as a separate group of taxa from other planthoppers. Cixioïdes was formally described by Spinola (1839) in family ‘Fulgorites’ as a subfamily, including Delphax and other delphacids that he separated as a subunit within ‘Cixioïdes’ he called ‘Delphacoïdes’ ( Spinola, 1839: 329 ). This higher taxon was therefore proposed for the first time by Spinola, but its name should follow ICZN Art. 23.3 of Principle of Priority and formed on Delphacida Leach, 1815 .