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1 Acta Parasitologica

1 1997

1 Zdzitowiecki K.

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Digenea of fishes of the Weddell Sea. V. Two new species of the genus Steringophorus [Fellodistomidae]

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Zdzitowiecki K.

nr 3

Steringophorus arntzi sp. n. is described from notothenioid fishes, Bathydraco marri (type-host, Bathydraconidae) and Dolloidraco longedorsalis (Artedidraconidae). This species resembles S. furciger (Olsson, 1868), but it is distinguished from that by eggs with a short filament, entire ovary (only with irregular margins), less elongate body and a post-bifurcal genital pore. Its area of distribution, the Antarctic, is distant from that of S. furciger (in the north hemisphere). Steringophorus liparidis sp. n. is described from Paraliparis antarcticus (Liparididae). This species resembles S. thulini Bray et Gibson, 1980, but it is distinguished by eggs with a spine on the anopercular pole, longer intestinal caeca, vitelline fields situated more anteriorly in relation to the ventral sucker, different hosts (liparidids contrary to gadiforms) and area of distribution (the Antarctic contrary to the north Atlantic). Occurrence of fellodistomid digeneans in the Antarctic subcontinental waters is recorded for the first time.