The plagiorchids are characterized by having well developed oral and ventral suckers, an ovary just posterior to the ventral sucker, and a pair of testes at the beginning of the posterior of the body that are situated diagonally from each other (Figure 2-30). The typical plagiorchid has three hosts in it life cycle. The first host being a snail that produces a cercaria that typically has two sucker of the same size, an insect or a second snail that serves as the second intermediate host, and a final host.


Figure 2-30.Plagiorchismicracanthos from a bat, Myotussodalis, in Kentucky. Note the large anterior and ventral suckers. The ovary about one-fourth of the body length from the anterior end, the two large oblique testes occurring int the second third of the body, and the lateral vitellaria.

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