A new allocreadiid (Trematoda) species from freshwater fish Heterandria bimaculata (Teleostei: Poeciliidae) in Southeastern Mexico |
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Authors: | Salgado-Maldonado Guillermo Caspeta-Mandujano Juan Manuel Vázquez Gabriela |
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Institution: | Instituto de Biología, Universidad Nacional Autónoma de México, A.P. 70-153, 04510 México D.F., Mexico. gsalgado@ibiologia.unam.mx |
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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]). |
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