A world checklist of extant and extinct species of Megaloptera (Insecta: Neuropterida) Author Martins, Caleb C. AB93D5C2-24CF-4B7D-B186-AF2F55099701 Instituto de Biología, UNAM, Departamento de Zoología, 04510 Ciudad de México, Mexico. calebcalifre@gmail.com Author Ardila-Camacho, Adrian AE43CCE5-53B7-4BAF-B30A-46655E2E578D Instituto de Biología, UNAM, Departamento de Zoología, 04510 Ciudad de México, Mexico. aardilac88@gmail.com Author Rivera-Gasperín, Sara Lariza 3987E426-106F-466E-8F69-7FFC7A787CE8 Instituto de Ecología, A. C., Red de Biodiversidad y Sistemática, 91073 Veracruz, Mexico. zaralariza@gmail.com Author Oswald, John D. 70FB3FE9-B546-40F5-A23D-8039B381631F Department of Entomology, Texas A & M University, Texas 77843, USA. j-oswald@tamu.edu Author Liu, Xingyue 9BA429B5-F2CB-44BF-BF8E-4D70D016B06B Department of Entomology, China Agricultural University, Beijing 100193, China. xingyue_liu@yahoo.com Author Contreras-Ramos, Atilano 1EC6004F-2261-415D-AC90-46D1B7344255 Instituto de Biología, UNAM, Departamento de Zoología, 04510 Ciudad de México, Mexico. acontreras@ib.unam.mx text European Journal of Taxonomy 2022 2022-04-08 812 1 1 93 http://dx.doi.org/10.5852/ejt.2022.812.1727 journal article 305334 10.5852/ejt.2022.812.1727 ca1e451c-d38c-46f9-a3b7-90ce56b558cd 2118-9773 6448732 ECA90CF4-5B0C-474B-8A3F-42463B3FFC07 Family Permithonidae Tillyard, 1922 Permithonidae Tillyard, 1922: 289 [ type genus: † Permithone Tillyard, 1922: 289 ]. Sialidopsidae M.D. Zalessky, 1928: 693 [ type genus: † Sialidopsis M.D. Zalessky, 1926: 76 ]. — Prokop et al . 2015: 265 . Taxonomic notes Zalessky (1928) described the family † Sialidopsidae – based on the single genus † Sialidopsis M.D. Zalesky, 1926 – which Martynov (1928) placed in the order Megaloptera . Here, we follow Prokop et al . (2015) in treating † Sialidopsis in the family † Permithonidae , and Engel et al . (2018) in treating † Permithonidae as Neuropterida incertae sedis . † Permithonidae currently contains>20 genera, of which only † Sialidopsis appears to have been previously placed in Megaloptera .