Bothriocephalus euryciensis n. sp. (Cestoideae, Pseudophyllidea) for the Cave Salamander Eurycea longicauda

Bothriocephalus euryciensis n. sp. occurs in the cave salamander Eurycea longicauda Green 1818 in Adair County, Oklahoma. It is most clearly related to B. rarus Thomas 1937 from Triturus viridescens Raf., but it differs from the latter in being much smaller, in shape of the scolex, number of eggs in gravid proglottids, number of testes, and position of the genital pore, and in having a sac-like uterus in gravid proglottids, characteristic, unusually large bothria, and a protrusible unarmed cirrus.