Psilostomidae Looss, 1900

Cremonte, Florencia & Drago, Fabiana B., 2007, Checklist of digenean parasites of birds from Argentina, Zootaxa 1403, pp. 1-36 : 12-13

Family Psilostomidae Looss, 1900

Psilochasmus Lühe, 1909

Psilochasmus oxyurus (Creplin, 1825) Lühe, 1910

Natural hosts: Chauna torquata (Oken) , Anas georgica spinicauda Vieillot , Larus maculipennis Lichten­

stein.

Experimental hosts: Anas platyrhynchos L. , Gallus gallus domesticus (L.). Site of infection: small intestine.

Localities: Chascomús lagoon; La Plata Zoological Garden, Mar del Plata city, Buenos Aires Province. Life history: Hi1 and Hi2: Heleobia australis (d'Orbigny) (natural host) from Chascomús, Buenos Aires

Province.

References: Szidat (1957), Labriola & Suriano (2001).

Ribeiroia Travassos, 1939 Ribeiroia ondatrae (Price, 1931) Price, 1942

Hosts: Spheniscus magellanicus (Forster) , Ardea alba egretta Gmelin , Phalacrocorax brasilianus (Gmelin) .

Site of infection: proventriculus, intestine.

Localities: La Plata Zoological Gargen, La Plata and De Monte lagoon, Buenos Aires Province; Obras Sanitarias, Buenos Aires city.

References: Boero et al. (1972a), Ostrowski de Núñez (1968b), Labriola & Suriano (1998). Comments: Cited by Boero et al. (1972a) as R. insignis Travassos, 1944 .