Bartolius pierrei n. g. n. sp. (Digenea: Gymnophallidae) from Península Valdés, Argentina

FLORENCIA CREMONTE

SYSTEMATIC PARASITOLOGY

SPRINGER

Año: 2001 vol. 49 p. 139 - 147

0165-5752

Bartolius pierrei n. gen. n. sp. (Digenea: Gymnophallidae) is described from metacercariae and naturally and cultivated obtained adults from southern Argentina. The second intermediate host is Darina solenoides (King) (Bivalvia: Mactridae) and the definitive host is Larus dominicanus Lichtenstein (Aves: Laridae). Diagnosis as follows: Body small, oval. Oral sucker without lateral projections, twice as large as ventral sucker (except in young metacercaria). Caeca short (in adults), without dorsal diverticula. Ventral sucker in posterior third of body. Ventral pit absent. Seminal vesicle bipartite. Ovary post-testicular. Vitelline glands paired, compact, close to ventral sucker. Uterus in fore- and hindbody. Genital atrium tubular. Genital pore inconspicuous, close to anterior margin of ventral sucker. Excretory vesicle Y-shaped with very short stem. Excretory formula: 2 [(2 + 2) + (2 + 2)] = 16. Bartolius is distinguished from other genera of Gymnophallidae by the post-testicular position of the ovary.