Umagillidae is a family of flatworms belonging to the order Rhabdocoela.
Description Umagillidae is the most species-rich taxon of symbiotic non-neodermatan flatworms. Umagillids are common endosymbionts of echinoderms, with few species also living inside sipunculids. They demonstrate a wide variety of feeding behaviors, ranging from endozoic predation of symbiotic protozoans to full endoparasitic feeding on its host's tissues. Most species, including species of Seritia and Wahlia are intestinal, while species of Anoplodium are confined to the coelomic regions of its host.
Genera
Bicladinae
Bicladus Kaburaki, 1925 Desmote Beklemischev, 1916 Fallacohospes Kozloff, 1965 Parafallacohospes Shinn, 1987
Collastominae
Collastoma Dörler, 1900
Umagillinae Anoplodiera Westblad, 1930 Anoplodiopsis Westblad, 1953 Anoplodium Schneider, 1858 Cleistogamia Faust, 1924 Macrogynium Meserve, 1934 Marcusella Westblad, 1953 Monticellina Westblad, 1953 Notothrix Hickman, 1955 Ozametra Marcus, 1949 Paranotothrix Cannon, 1982 Seretia Cannon, 1982 Syndesmis Silliman, 1881 Umagilla Wahl, 1909 Wahlia Westblad, 1930
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