鱼类海盘虫属两新种(单殖亚纲,锚首虫科)

DESCRIPTION OF TWO NEW SPECIES HALIOTREMA ( MONOGENEA, ANCYROCEPHALIDAE) OF FISHES

记述了分别寄生于日本骨鳂Ostichthys japonicus(Cuvier & Valencienne)和银方头鱼Branchioste- gun argentatus(Cuvier & Valenciennes)鳃上的海盘虫属两新种.五芒海盘虫,新种Haliotrema pentaristu- lata sp.nov在中央大钩的形态上相似于红鳂海盘虫Haliotrema holocentri Young,1968,石斑海盘虫H epinepheli Young,1968和驼背鲈海盘虫H.cromileptis Young,1968,背联结片相似于H.cromileptis,腹联结片相似于H.holocentri,交接管的形状与量度与已知者也不同;唐氏海盘虫,新种H.tangi sp.nov 与鲬海盘虫H.platycephali Yin & Sproston,1948和马卡萨海盘虫H.macassarensis(Yam.,1963)By- chowsky & Nagibina,1971在中央大钩的形态上相似,但新种的联结片、交接器和阴道结构与已知种不同.

Two new species of Haliotrema Johnston ＆ Tiegs, parasiting in the gills of Ostichthys japonicus（ Cuvier ＆ Valenciennes） and Branchiostegus argentatus（ Cuvier ＆ Valenciennes） were described. Haliotrema pentaristulatus sp. nov. is similar to H. holocentri Young,1968, H. epinepheli Young, 1968 and H. cromileptis Young, 1968 in the shape of central anchors; the dorsal connective bar is similar to that of H. cromileptis; the ventral connective bar is similar to that of H. holocentri, and the new species differs from the known species in the structure and measurement of copulatory organ. Haliotrema tangi sp. nov. is similar to H. platycephali Yin ＆ Sproston, 1948 and H. macassaarensis （ Yam, 1963 ） Bychowsky ＆ Nagibina 1971, in the shape of central anchors, but differs from the known species in the connective bar, the vaginal structure and copulatory organ.