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Mesocoelium malayanum sp.n. (Digenea: Brachycoeliidae) in a frog, Rana macrodon Dumeril and Bibron 1941, from Malaysia

  • James R. Palmieri (a1) and John T. Sullivan (a1)

Abstract

Mesocoelium malayanum sp.n. is described from the frog Rana macrodon, in Malaysia. Elongate body, broader anteriorly, measuring 1·900 (1·679–2·070) mm long by 0·404 (0·380–0·437) wide, tegument aspinose oral sucker 0·212 (0·200–0·228) by 0·202 (0·191–0·205), acetabulum 0·141 (0·132–0·150) by 0·139 (0·123–0·146), prepharynx present, oesophagus 0·115 (0·096–0·137), caeca reaching posterior ⅓ of body, anterior testis 0·097 (0·087–0·110) by 0·091 (0·087–0·100) dorsal to acetabulum, posterior testis 0·094 (0·087–0·101) by 0·092 (0·091–0·100), cirrus pouch 0·121 (0·111–0·130) by 0·047 (0·041–0·055), genital pore at left of midline of oesophagus just anterior to intestinal bifurcation, ovary 0·110 (0·091–0·127) by 0·089 (0·085–0·096) on left of body and posterior to acetabulum, vitelline glands with single follicles extending from intestinal bifurcation to ends of caeca, excretory vesicle I-shaped and eggs 0·040 (0·037–0·046) by 0·023 (0·022–0·024). Although morphologically related to M. maroccanum and M. meggitti, M. malayanum is considered to be a new species.

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References

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Cheng, T. (1960) Studies on the trematode family Brachycoeliidae. IV. A revision of the genus Mesocoelium Odhner, 1911, and the status of Pintnaria Poche, 1907. American Midland Naturalist, 439469.
Fischthal, J. and R, Kuntz. (1965) Digenetic trematodes of amphibians and reptiles from North Borneo (Malaysia). Proceedings of the Helminthological Society of Washington, 32, 124136.
Freitas, J. F. T. de. (1963) Revisão Da Familia Mesocoeliidae Dollfus, 1933 (Trematoda). Memórias Do Instituto Oswaldo Cruz, 61, 177311.
Freitas, J. F. T. de. (1967) Notas sôbre trematódos Mesocoeliideos. Boletim Do Museu De Biologia Prof. Mello-Leitâo, Zool. No. 30, 11 pp.
Yamaguti, S. (1971) Synopsis of Digenetic Trematodes of Vertebrates. Vol. I. 1074 pp. Keigaku Publishing Co. Tokyo.

Mesocoelium malayanum sp.n. (Digenea: Brachycoeliidae) in a frog, Rana macrodon Dumeril and Bibron 1941, from Malaysia

  • James R. Palmieri (a1) and John T. Sullivan (a1)

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