Choledocystus simulans Freitas, 1941

Aguiar, Aline, Morais, Drausio Honorio, Firmino Silva, Lidiane A., Anjos, Luciano Alves Dos, Foster, Ottilie Carolina & Silva, Reinaldo José Da, 2021, Biodiversity of anuran endoparasites from a transitional area between the Atlantic Forest and Cerrado biomes in Brazil: new records and remarks, Zootaxa 4948 (1), pp. 1-41 : 21

Choledocystus simulans Freitas, 1941

Hosts (prevalence; range): L. podicipinus (2/225; 1), L. fuscus (1/50; 1), and E. bicolor (1/40; 3).

Site of infection: small intestine and stomach.

Stage: juvenile.

Type host and type locality: L. latras , Montevideo, Uruguay .

Comments: Choledocystus simulans was described as Glypthelmins simulans by Freitas (1941), and then Razo- Mendivil et al. (2006) placed it in Choledocystus by the features of this genus such as tegument with triangular spines extending from anterior to posterior region, suckers with similar size, globular cirrus sac, dextral ovary and Y-shaped excretory vesicle opened for a subterminal pore ( Razo-Mendivil et al. 2006). Other features such as lateral pore in relation to acetabulum, entire seminal vesicle, and absence of seminal receptacle can distinguish Choledocystus from Glypthelmins and Rauschiella ( Razo-Mendivil et al. 2006; Razo-Mendivil & Pérez-Ponce de Léon 2008). Furthermore, the specimens of our study presented the main features of C. simulans which are globular seminal vesicle, testes close with each other and with ovary, well developed vitelline follicles from the level of intestinal bifurcation not reaching the end of the body, and caeca ending in posterior extremity of body (Freitas 1941; Travassos et al. 1969). Leptodactylus podicipinus , L. fuscus , and E. bicolor are new hosts for C. simulans .