Sphincterostoma
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 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 ro ...'' Manter, 1936 **'' Dactylotrema'' Bravo-Hollis & Manter, 1957 **'' Homalometron'' Stafford, 1904 **'' Marsupioacetabulum'' Yamaguti, 1952 **'' Microcreadium'' Simer, 1929 **'' ...
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