Spirhapalum siamensis n. sp. obtained from the heart of the Malayan box turtle, Cuora amboinensis, from western Thailand is described. This blood fluke differs from the 2 previously known species of Spirhapalum in its larger overall body size, constricted mid-body, greater number of pre-ovarian testes, ceca that loop anteriorly from the cecal bifurcation before turning to the posterior, and the relatively smaller size of its ventral sucker. A phylogenetic analysis using molecular characters places the new species in the basal clade of tetrapod blood flukes, more derived than Spirhapalum polesianum, but less derived than Spirorchis spp.
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1 June 2009
A New Species of Blood Fluke (Digenea: Spirorchiidae) from the Malayan Box Turtle, Cuora amboinensis (Cryptodira: Geomydidae) in Thailand
Vasyl V. Tkach,
Scott D. Snyder,
Jefferson A. Vaughan
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