Apocreadiidae

Apocreadiidae  is a family of parasitic worms in the class Trematoda.

Characteristics
Members of the family are characterised by having extensive vitelline (yolk producing) follicles, eye-spot pigment dispersed in the front half of the body, a rod-shaped excretory vesicle, no cirrus-sac and the genital pore just in front of the ventral sucker or occasionally just behind it.

Genera
The World Register of Marine Species lists the following genera:
 * Apocreadiinae Skrjabin, 1942
 * Callohelmis Cribb & Bray, 1999
 * Choanodera Manter, 1940
 * Crassicutis Manter, 1936
 * Dactylotrema Bravo-Hollis & Manter, 1957
 * Homalometron Stafford, 1904
 * Marsupioacetabulum Yamaguti, 1952
 * Microcreadium Simer, 1929
 * Myzotus Manter, 1940
 * Neoapocreadium Siddiqi & Cable, 1960
 * Neomegasolena Siddiqi & Cable, 1960
 * Pancreadium Manter, 1954
 * Posterotestis Ostrowski de Nunez, Brugni & Flores, 2003
 * Procaudotestis Szidat, 1954
 * Trematobrien Dollfus, 1950
 * Megaperinae Manter, 1934
 * Haintestinum Pulis, Curran, Andres & Overstreet, 2013
 * Megapera Manter, 1934
 * Thysanopharynx Manter, 1933
 * Postporinae Yamaguti, 1958
 * Postporus Manter, 1949
 * Schistorchiinae Yamaguti, 1942
 * Megacreadium Nagaty, 1956
 * Neomegacreadium Machida & Kuramochi, 1999
 * Schistorchis Lühe in Herdman, 1906
 * Sphincteristomum Oshmarin, Mamaev & Parukhin, 1961
 * Sphincterostoma Yamaguti, 1937