Corydiidae, previously known as Polyphagidae, is a family of the order Blattodea (cockroaches). Many are known as sand cockroaches. The family is divided into five subfamilies, comprising some 40 genera. One prominent species is the desert cockroach, Arenivaga investigata.
†Fragosublatta Chen et al., 2021 Burmese amber, Myanmar, Cenomanian
†Magniocula Qiu et al., 2019 Burmese amber, Myanmar, Cenomanian
†Nodosigalea Li & Huang, 2018 Burmese amber, Myanmar, Cenomanian
†Spinka Vršanský et al., 2019 Burmese amber, Myanmar, Cenomanian
^Beccaloni, G. W.; Eggleton, P. (2011). "Order Blattodea Brunner von Wattenwyl, 1882". In Zhang, Z.-Q. (ed.). Animal biodiversity: An outline of higher-level classification and survey of taxonomic richness. Zootaxa. pp. 199–200.
^"synonym Polyphagidae Saussure, 1864: Cockroach Species File".
^蟑螂圖鑑 (in Chinese). 2014-09-19. Retrieved 2014-10-13.