Pseudoplagioporus interruptus durio and manter, 1968 and hamacreadium agyptia sp. n. (trematoda: opecoeliidae)‎ from the Red Sea fish in Egypt

الملخص EN

The present investigation includes a description of two species of trematodes, Hamacreadium egyptia sp.

n.

and Pseudoplagioporus interruptus Durio and Manter, infecting two fish species, Lethrinus nebulosus Forsskål, 1775 and L.

mahse- na Forsskål, 1775 (Family: Lethrinidae ) in the Red Sea.

Both trematodes were described from Egypt for the first time.

Fish samples were collected during the period from February to November, 1993.

A total of 103 Lethrinidae fishes were examined, the rate of infection was 25%.

In Lethrinus nebulosus, 24% were found infected, with the highest prevalence during summer (28%).

In case of L.

mahsena, 32% were found infected with the highest infection rate during spring (58%).

A full description is given to the trematodes using both light and scanning electron microscopy.

KEY WORDS: Helminth parasites, Digenetic trematodes, Ultrastructure, Helminth