SOME NEMATODES OF FRESH-WATER FISHES IN VENEZUELA

The present paper comprises a systematic survey of nematodes found in 88 specimens of 24 species of freshwater fishes in Venezuela in 1992 a nd 1994. The following 13 species of nematodes were recorded: Adults: Guyanema longispiculum Moravec, Prouza et Royero, 1996, Guyanema sp., Procamallanus (Spirocamallanus) inopinatus Travassos, Artigas et Perei ra, 1928, P. (S.) krameri (Petter, 1974) comb. n., P. (S.) pintoi (Koh n et Fernandes, 1988) comb. n., Procamallanus (Spirocamallanus) sp., R aphidascaris (Sprentascaris) mahnerti (Fetter et Cassone, 1984). Larva e: Anisakidae gen. sp., Brevimulticaecum sp., Contracaecum sp. Type 1, Contracaecum sp. Type 2, Contracaecum sp. Type 3, Eustrongylides sp. All these parasites are reported from Venezuela for the first time and all findings represent new host records. Brevimulticaecum larvae are reported from fishes for the first time. Almost all parasites are brie fly described and illustrated and problems concerning their morphology , taxonomy, hosts and geographical distribution are discussed. A new n ame, Terranova diazungriai nom. nov. is proposed for T. caballeroi Dia z-UIngria, 1968 (a junior homonym of T. Caballeroi Barus et Coy Otero, 1966).