Metacercariae 60 to 100 days old were fed to young steelhead trout, Salmo gairdneri, and partially developed specimens of P. ![]() Cercariae encyst in the amphipod, Hydella azteca stonefly nymphs of the genus Arcynopteryx mayfly nymphs of the genera Heptagenia and Paraleptophlebia chironomid larvae of the genera Chironomus, Polypedilum, Phaenopsectra, Ablabesmyia, and Psectrocladius and caddis larvae of the genera Brachycentrus, Limnephilus, and Hydropsyche. Mother and daughter sporocysts develop, the latter producing cotylomicrocercous cercariae within 90 to 130 days. The operculate snail, Lithoglyphus virens, serves as first intermediate host. The miracidium develops and hatches in 11 to 14 days at 22 to 25 C. ![]() ![]() ![]() Podocotyle shawi is transferred to the genus Plagioporus.
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