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On a New Trematode, Astiotrema sudanensis, sp. nov., from a Freshwater Turtle in the Sudan

Published online by Cambridge University Press:  05 June 2009

L. F. Khalil
L. F. Khalil
Affiliation:
From the Department of Parasitology, London School of Hygiene and Tropical Medicine
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Abstract

Seven specimens of this new species were collected from the intestine of a freshwater turtle, Trionyx triungnis (═T. nilotica) in the Sudan.

These are lanceolate worms which gradually taper to rounded ends, with a length of 2⋅5–2⋅9 mm. and a width of 0⋅6–0⋅9 mm. The cuticle is invested with scales, dense in the anterior half of the worm, but becoming more and more sparse towards the caudal end. The oral sucker is large, measuring 0⋅23–0⋅27 mm. in diameter and is about one and a half times the diameter of the ventral sucker which measures 0⋅14–0⋅17 mm. in diameter. Both suckers lie in the anterior half of the body. The mouth is subterminal and leads to a pharynx which is stout, 0⋅7–0⋅8 mm. by 0⋅11–0⋅12 mm., and leads to a long oesophagus of 0⋅25–0⋅32 mm. in length. The caeca terminate at the posterior border of the posterior testis or slightly anterior to it.

Type
Research Article
Information
Journal of Helminthology , Volume 33 , Issue 4 , December 1959 , pp. 263 - 266
Copyright
Copyright © Cambridge University Press 1959

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