“…given that paruterinids parasitize a wide diversity of avian orders, from accipitriformes (hawks, eagles, kites and their allies) and caprimulgiformes (nightjars), to several families of Passeriformes (perching birds), cuckoos host a relatively small portion of paruterinid diversity. several studies have attempted to formally define the phylogenetic relationships among cuckoos using molecular, morphological, ecological and behavioural data (Hughes 1996(Hughes , 2000(Hughes , 2006 Bona and Maffi (1985) Francobona similita (Bona et Maffi, 1984) (Bona, Bosco et Maffi, 1986) Spasskii, 1991 trogoniformes Trogon violaceus gmelin Peru Bona et al (1986) Troguterina disparuncinata (Bona, Bosco et Maffi, 1986) Spasskii, 1991 trogoniformes Trogon curucui (l.) argentina Bona et al (1986) Johnson , Posso and Donatelli 2006, 2010 (Bona et Maffi, 1984) Georgiev et Kornyushin, 1994, two undescribed species within the "rectangula" group of Paruterina Fuhrmann, 1906 (sensu Bona and Maffi 1984a) and an unidentified species (see Bona and Maffi 1984a, b) of Triaenorhina. Coccycua is the only genus of the group for which members have not been examined yet for cestodes.…”