A new monorchiid trematode, Paramonorcheides selaris n. sp., from the carangid fish Selar crumenophthalmus in the Bay of Bengal off the Visakhapatnam coast of India

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Abstract

Paramonorcheides selaris n. sp. is described from the intestine of the carangid fish Selar crumenophthalmus (Bloch) off the Visakhapatnam coast, Bay of Bengal. It is closest to the Australian species P. pseudocaranxi Dove & Cribb, 1998, but differs in its shorter cirrus-sac extending only to the level of the ovary rather than to the level of the testes, in lacking eye-spot pigment and in details of the armature of the terminal genitalia. P. pseudocaranxi of Machida (2005) is regarded as identical to the new species. The validity of Allobacciger Hafeezullah & Siddiqi, 1970, as distinct from Monorcheides Odhner, 1905, is discussed. A key to the six species of Paramonorcheides Yamaguti, 1938 is presented.

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