title: A new species of Paracreptotrema (Digenea, Plagiorchiformes, Allocreadiidae) infecting two species of poeciliids in Río Malila of the Río Pánuco basin, Hidalgo, México, with a key to the species of the genus.
abstract: Paracreptotremarosenthali sp. n. was discovered in the intestine of Xiphophorusmalinche and Pseudoxiphophorusjonesii, collected from the headwaters of Río Malila, tributary of Río Conzintla, in the Río Pánuco basin, Hidalgo, México, during 2008-2009. The new species differs from the five known species of Paracreptotrema Choudhury, Pérez-Ponce de León, Brooks & Daverdin, 2006 by having vitelline follicles that extend from a level anterior to the pharynx to mid-testes, the seminal vesicle which is more extensively folded, and a wider cirrus sac. The new species resembles Paracreptotremaheterandriae in the length of its ceca, which surpasses the posterior margin of the ovary but do not reach the testes. A key to the species of Paracreptotrema is provided.
authors.affiliation: Universidad Autónoma del Estado de Hidalgo, Centro de Investigaciones Biológicas, Apartado Postal 1-10, C.P. 42001, Pachuca, Hidalgo, México.
authors.forename: Christian E
authors.initials: CE
authors.lastname: Bautista-Hernández
authors.affiliation: Universidad Autónoma del Estado de Hidalgo, Centro de Investigaciones Biológicas, Apartado Postal 1-10, C.P. 42001, Pachuca, Hidalgo, México.
authors.forename: Scott
authors.initials: S
authors.lastname: Monks
authors.affiliation: Universidad Autónoma del Estado de Hidalgo, Centro de Investigaciones Biológicas, Apartado Postal 1-10, C.P. 42001, Pachuca, Hidalgo, México.
authors.forename: Griselda
authors.initials: G
authors.lastname: Pulido-Flores
authors.affiliation: University of Navarra, Department of Zoology and Ecology, School of Sciencies, Irunlarrea n°1, E-31008 Pamplona, Navarra, Spain.
authors.forename: Rafael
authors.initials: R
authors.lastname: Miranda
keywords: Paracreptotrema; Xiphophorusmalinche; endemic species; helminth parasite; key