Allassostomoides parvus

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Allassostomoides parvus development in Planorbella trivolvus. Infected Planorbella trivolvus removed from shell. Note infected ovotestis. Redia with developing cercariae.

Adult Allassostomoides parvus from a bullfrog and cercariae and metacercaria formation.

Allassostomoides parvus metacercariae on the shells of Planorbella trivolvis snails and on the skin of a plains leopard frog, Rana blairi. Phyas gyrina snail removed from the stomach of a bullfrog showing scars on shell from A. parvus metacercariae.

 

"Maybe you understand frogs, and maybe you don't understand 'em; and maybe you've had experience, and maybe you an't only a amature." Mark Twain