title: A new allocreadiid (Trematoda) species from freshwater fish Heterandria bimaculata (Teleostei: Poeciliidae) in Southeastern Mexico.
abstract: Paracreptotrema heterandriae n. sp. (Trematoda: Allocreadiidae) is described from the intestine of the freshwater fish Heterandria bimaculata (Teleostei: Poeciliidae) from the upper basin of Río La Antigua, in Veracruz, Mexico. The new species is distinguished from the 3 others in the Paracreptotrema Choudhury, Pérez-Ponce de León, Brooks, and Daverdin, 2006 , mainly by having a feeble membranous cirrus sac containing an uncoiled seminal vesicle, instead of a well-developed muscular cirrus sac that encloses coiled seminal vesicle, pars prostatica, and ejaculatory duct as in the previously 3 nominal species. Moreover, eggs of the new species are larger than all others ([measurements in micrometers] eggs of P. heterandriae n. sp. 72.5 [70-75] × 40 [35-41]; P. blancoi 55.4 [52.5-62.5] × 38.5 [32.5-42.5]; P. mendezi 46 × 37; P. profundulusi 57 [52-60] × 27.8 [25-30]).
authors: Instituto de Biología, Universidad Nacional Autónoma de México, A.P. 70-153, 04510 México D.F., Mexico. gsalgado@ibiologia.unam.mx
authors: Guillermo
authors: G
authors: Salgado-Maldonado
authors: Juan Manuel
authors: JM
authors: Caspeta-Mandujano
authors: Gabriela
authors: G
authors: Vázquez
mesh_terms: D000818:Animals; D003532:Cyprinodontiformes / Q000469:parasitology*; D005393:Fish Diseases / Q000453:epidemiology / Q000469:parasitology*; D007411:Intestinal Diseases, Parasitic / Q000453:epidemiology / Q000469:parasitology / Q000662:veterinary*; D007422:Intestines / Q000469:parasitology; D008800:Mexico / Q000453:epidemiology; D061005:Ponds; D015995:Prevalence; D045483:Rivers; D014200:Trematoda / Q000033:anatomy & histology / Q000145:classification*; D014201:Trematode Infections / Q000453:epidemiology / Q000469:parasitology / Q000662:veterinary*