Demidospermus annulus Marcotegui & Martorelli, 2011

Type host. Parapimelodus valenciennis (Lütken) (Pisces: Pimelodidae). Site of infection. Gills.

Type locality. Argentina, Buenos Aires Province, Río Salado (35°44'58.77"S, 57°25'12.83"W). Holotype: MLP 6302. Paratype: MLP 6303.

Reference. Marcotegui & Martorelli (2011).