title: Posterotestes unelen gen. et sp. n. (Digenea: Apocreadiidae) from Percichthys trucha (Osteichthyes: Percichthyidae) in Patagonia, Argentina.
abstract: Posterotestes gen. n. (Digenea: Apocreadiidae, Apocrcadiinae) is proposed for specimens with the following features: spiny body, posterior position of gonads, extension of vitelline follicles up to level of intestinal bifurcation and absent at post-testicular space, long oesophagus and extension of caeca up to anterior testis. Posterotestes unelen sp. n. is described from the intestine of the native fish, Percichthys trucha (Cuvier et Valenciennes) (Osteichthyes: Percichthyidae) from Patagonian Andean lakes.
authors.affiliation: Departamento de Ciencias Biológicas, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón II, (1428) Buenos Aires, Argentina.
authors.forename: Margarita Ostrowski
authors.initials: MO
authors.lastname: de Núñez
authors.forename: Norma
authors.initials: N
authors.lastname: Brugni
authors.forename: Verónica R
authors.initials: VR
authors.lastname: Flores
mesh_terms: D000818:Animals; D001118:Argentina; D005260:Female; D005393:Fish Diseases / Q000469:parasitology*; D005618:Fresh Water / Q000469:parasitology; D007422:Intestines / Q000469:parasitology; D008297:Male; D010473:Perciformes / Q000469:parasitology*; D014200:Trematoda / Q000033:anatomy & histology / Q000302:isolation & purification* / Q000472:pathogenicity