Cosmocerca podicipinus Baker & Vaucher, 1984

Hosts (prevalence; range): P. platensis (1/38; 1), L. chaquensis (3/143; 3–6), and L. podicipinus (84/225; 1–17).

Site of infection: lungs and intestines.

Stage: adult.

Type host and type locality: L. podicipinus, Capitan Bado, Amambay, Paraguay .

Comments: this nematode is widely distributed across South America and it can be found in several anuran species (see Campi„o et al. 2014; Campi„ o et al. 2016; Graça et al. 2017). We observed the main characters of males of C. podicipinus, such as five pairs of preanal plectanes fused in the row with rosette papillae, adanal region with large subventral rosette papillae and a large unpaired papilla on the anterior lip of anus (Baker & Vaucher 1984; González & Hamann 2011).