Faciolopsis buski

Fasciolopsis buski. Adult worm (carmine stain, scanning power). This very large fluke, which lives in the intestine of pigs and humans, usually measures 20 to 75 mm long by 0.5 to 3.0 mm thick and has poorly developed oral and ventral suckers. The body of the worm tapers to a rounded anterior end. The intestinal ceca are not branched. The extensively branched, pink- staining testes occupy most of the posterior half of the worm. The branched ovary is located anterior to the testes, and the short, coiled uterus lies between the ovary and the ventral sucker. The brown-staining yolk glands (vitellaria) are finely granular and lie along the lateral margins of the worm from the ventral sucker to the posterior extremity. The surface of the body is spinous.