Journal
ZOOKEYS
Volume -, Issue 559, Pages 1-16Publisher
PENSOFT PUBLISHERS
DOI: 10.3897/zookeys.559.6842
Keywords
Helminth; Enteric nematode; Reptile; Lacertilia; Phrynosomatidae; Michoacan; Guerrero
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Funding
- Diversidad genetica de helmintos parasitos de anfibios en el Occidente de Mexico project [PAPIIT-IN203911]
- The amphibians and reptiles and their parasites of Mexico, a megadiverse country project (National Science Foundation) [DEB-01613802]
- EUGMO
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Two new species of Parapharyngodon collected from the intestine of the Mexican boulder spiny lizard Sceloporus pyrocephalus are described. This study increases to 49 the number of valid species assigned to Parapharyngodon worldwide, 11 of them distributed in Mexico. Males of the two new species share the presence of four pairs of caudal papillae, an anterior echinate cloacal lip and the presence of lateral alae; however, both differ from each other in lateral alae extension and echinate cloacal anterior lip morphology. Females of both species have a prebulbar uterus and eggs shell punctuate with pores, characteristics shared with few other species of Parapharyngodon. Both new species differ from other congeneric species in the papillar arrangement, the anterior cloacal lip morphology, the lateral alae extension and total length/spicule ratio. A taxonomic key for the species of Parapharyngodon distributed in Mexico is provided.
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