Family Cryptogonimidae Ciurea, 1933

Acanthostomum Looss, 1899

Acanthostomum brauni Mañé Garzón & Gil, 1961

Host and records: Phrynops hilarii (Duméril & Bibron, 1835) (experimental and natural host) (BA).

Site of infection: intestine.

Life cycle: Hi1: Heleobia castellanosae (Gaillard) (natural host) from Zoological Garden of Buenos Aires city and H. piscium (d'Orbigny) (experimental host). Hi2: Cnesterodon decemmaculatus (Jenyns) (experimental and natural host), Gambusia affinis (Baird & Girard) and Phalloceros caudimaculatus (Hensel) from Zoological Garden of Buenos Aires city (natural hosts).

Reference: Ostrowski de Núñez (1987).