Ptilodactylidae is a family of beetles belonging to the Elateriformia. There around 500 extant species in 35 genera. They are generally associated with riparian and aquatic habitats. The larvae generally live associated with rotting wood or vegetation, or within gravel and detritus on the edge of water bodies. The larvae of some species feed on submerged rotting wood or on plant roots, while the adults of some species are known to feed on fungus with modified brush-like maxillae.Lawrence, John F.. "Ptilodactylidae Laporte, 1836: Coleoptera, Beetles". Handbook of Zoology Online, edited by Andreas Schmidt-Rhaesa. Berlin, Boston: De Gruyter, 2016.
Genera Subfamily Anchytarsinae Champion, 1897 Anchycteis Horn, 1880 Anchytarsus Guérin-Méneville, 1843 Epilichas White, 1859 Pseudoepilichas Armstrong & Nakane, 1956 †Electrolichas Alekseev & Jäch 2016 Baltic amber, Eocene Subfamily Apoglossinae Champion, 1897 Apoglossa Guérin-Méneville, 1843 Bradytoma Guérin-Méneville, 1849 Octoglossa Guérin-Méneville, 1843 Subfamily Araeopidiinae Lawrence, 1991 Araeopidius Cockerell, 1906 Subfamily Byrrocryptinae Lawrence et al., 2024 Byrrocryptus Broun, 1893 Subfamily Cladotominae Pic, 1914 Austrolichus Lawrence & Stribling, 1992 Cladotoma Westwood, 1837 Drupeus Lewis, 1895 Hovactyla Fairmaire, 1901 Paralichus White, 1859 Pseudocladotoma Pic, 1918 Subfamily Ptilodactylinae Laporte, 1836 Chelonariomorphus Pic, 1916 Daemon Laporte, 1836 Falsotherius Pic, 1913 Lachnodactyla Champion, 1897 Microdrupeus Nakane, 1993 Pherocladus Fairmaire, 1881 Podabrocephalus Pic, 1913 Ptilodactyla Illiger, 1807 Stirophora Champion, 1897 Subfamily Unplaced Aphebodactyla Chatzimanolis, Cashion, Engel, & Falin, 2012 Falsoptilodactyla Pic, 1958 Ptilodactyloides Motschulsky, 1856 Therius Guérin-Méneville, 1849 Valoka Deleve, 1872 †Aphebodactyla Chatzimanolis et al. 2012 Burmese amber, Myanmar, Cenomanian †Ptilodactyloides Motschulsky 1856 Baltic amber, Eocene
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