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. Genera Corydiinae Anosigamia Arenivaga Austropolyphaga Eremoblatta Ergaula Eucorydia Eupolyphaga Hemelytroblatta Heterogamisca Heterogamodes Homoeogamia Hypercompsa Leiopteroblatta Mononychoblatta Nymphrytria Polyphaga Polyphagina Polyphagoides Therea Latindiinae Buboblatta Bucolion Compsodes Gapudipentax Latindia Melestora Myrmecoblatta Paralatindia Sinolatindia Stenoblatta Other Aclavoidea Anacompsa Ctenoneura Euthyrrhapha (Euthyrrhaphinae) Holocompsa (Holocompsinae) Homopteroidea Ipisoma Ipolatta Melyroidea Oulopteryx Pholadoblatta Sphecophila (Tiviinae) Tivia (Tiviinae) Zetha Extinct genera †Bimodala Šmídová, 2019 Burmese amber, Myanmar, Cenomanian †Cretaholocompsa Martínez-Delclòs, 1993 la Pedrera de Rubies Formation, Spain, Barremian †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 References Cockroach families