Some nematodes from freshwater fishes in central Africa.

摘要: Twenty species (sixteen adult and four larval) of parasitic nematodes belonging to the Ascaridoidea, Camallanoidea, Cosmocercoidea, Dioctophymatoidea, Habronematoidea, Oxyuroidea, Seuratoidea, Thelazioidea were collected from freshwater fishes Congo River basin in Democratic Republic Central African 2008 2012, respectively. Based on light scanning electron microscopical examination, many are redescribed detail. This material also contained previously unknown species, Labeonema longispiculatum sp. n. Synodontis acanthomias Boulenger, Gendria longispiculata Schilbe grenfelli (Boulenger), G. sanghaensis marmoratus Cucullanus congolensis Auchenoglanis occidentalis (Valenciennes). The new L. is mainly characterised by conspicuously long (210-228 µm) spicules, approximately twice as those other congeners, length (45-48 gubernaculum host family (Mochokidae), whereas very (1.2 mm) shape oesophagus cephalic vesicle, distribution postanal papillae (Schilbeidae). Main characteristic features presence a hexagonal oral aperture surrounded lip-like structures, posterior portion moderately expanded, spicules 414-438 µm 54-57 long, respectively, deirids located at level end absence cervical alae. differs congeneric parasitising brackish-water ventral precloacal sucker lateral preanal papillae, large median papilla-like formation, 480-489 location excretory pore region oesophago-intestinal junction. Chabaudus Inglis et Ogden, 1965 considered junior synonym Baylis, 1930 and, consequently, listed former genus transferred latter alaini (Alfonso-Roque, 1981) comb. n., chabaudi (Inglis 1965) dehradunensis (Rizvi, Bursey Maity, 2016) thysi (Puylaert, 1970) williamsi findings represent geographical records.