@ARTICLE{TreeBASE2Ref28222, author = {Jackson Ryan Roberts and Kenneth M. Halanych and Covadonga R Arias and Stephen S Curran and Stephen A Bullard}, title = {A New Species of Spirorchis MacCallum, 1918 (Digenea: Schistosomatoidea) and Spirorchis scripta Stunkard, 1923 Infecting River Cooter, Pseudemys concinna (Le Conte, 1830), (Testudines: Emydidae) in the Pascagoula River, Mississippi, U.S.A.; Including an Updated Phylogeny for Spirorchis spp.}, year = {2018}, keywords = {Spirorchis, Emydidae, Pseudemys concinna, taxonomy, Pascagoula River, Reelfoot Lake, Coastal Plain, 28S, 18S}, doi = {}, url = {http://}, pmid = {}, journal = {Comparative Parasitology}, volume = {85}, number = {}, pages = {}, abstract = {River cooters (Pseudemys concinna [Le Conte, 1830]) from the Pascagoula River (30?37'07.67"N, 88?36'44.53"W; Mississippi, U.S.A.) were infected by Spirorchis scripta Stunkard, 1923 and Spirorchis testiplexus n. sp. The new species resembles Spirorchis artericola (Ward, 1921) Stunkard, 1921 and Spirorchis innominatus Ward, 1921 (type species) by having a median esophageal diverticulum, ceca that extend slightly posterior to the genitalia, 10 testes, and a testicular column that extends anteriad to near the cecal bifurcation. Based on a comparative morphological study of existing type materials, vouchers, and published descriptions of similar congeners, S. testiplexus is unique by the combination of having a proportionally wider body, laterally-directed cecal diverticula, deeply lobed testes, a testicular column that fills the intercecal space, and an external seminal vesicle that occupies the space between the posterior-most testis and the ovary and that passes dorsal or dorsolateral to the ovary. The large subunit rDNA (28S) Bayesian inference phylogenetic analysis (including 16 turtle blood fluke species of 7 genera) showed a strongly supported monophyletic Spirorchis MacCallum, 1918 sister to Spirhapalum siamensis Tkach, Snyder, and Vaughn, 2009.} }

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