Abstract
During a helminthological examination of flathead knob-scaled lizards, Xenosaurus platyceps King and Thompson 1968, from Mexico, 4 of 10 were found to harbor 56 (14 male, 42 female) nematodes of an undescribed species of Spauligodon Skrjabin, Schikhobalova and Lagodovskaja, 1960. The lizard family Xenosauridae is composed of two well-differentiated genera: Shinisaurus in southern China and Xenosaurus in Mexico and Guatemala (Pérez-Ramos et al., 2000). Xenosaurus platyceps is a stocky, medium-sized species endemic to the Mexican state of Tamaulipas where it occurs in dry oak and tropical deciduous forests of the Sierra Madre Oriental (Flores-Villela 1993; Flores-Villela and Gerez, 1994). The ecology of X. platyceps has been studied (Lemos-Espinal, 1997), but, to our knowledge, there are no helminthological reports for it.
References
Bursey, C. R., Goldberg, S. R. & Kraus, F. (2005) New species of Spauligodon (Nematoda: Pharyngodonidae) in Lepidodactylus novaeguineae (Sauria: Gekkonidae) from Papua New Guinea. Journal of Parasitology, 91, 324–328.
Chabaud, A. G. & Brygoo, E. R. (1962) Nématodes parasites de Caméleons malgaches. Deuxième note. Annales de Parasitologie Humaine et Comparée, 37, 569–602.
Flores-Villela, O. (1993) Herpetofauna Mexicana. Annotated List of the Species of Amphibians and Reptiles of Mexico, Recent Taxonomic Changes and New Species. Special Publication No. 17, Carnegie Museum of Natural History, Pittsburgh, 73 pp.
Flores Villela, O. & Gerez, P. (1994) Biodiversidad y Conservación en México: Vertebrados, Vegetación y Uso del Suelo. Commisión Nacional para el Conocimiento y Uso de La Biodiversidad y Universidad Nacional Autónoma de México, Ciudad Universitaria, México, D.F. 439 pp.
Jiménez-Ruiz, F. A., León-Règagnon, V. & Campbell, J. A. (2003) A new species of Spauligodon (Nematoda: Pharyngodonidae) parasite of Cnemidophorus spp. (Lacertilia: Teiidae) from southern Mexico. Journal of Parasitology, 89, 351–355.
Lemos-Espinal, J. A., Smith, G. R. & Ballinger, R. E. (1997) Natural history of Xenosaurus platyceps, a crevice-dwelling lizard from Tamaulipas, Mexico. Herpetological Natural History, 5, 181–186.
Pérez-Ramos, E., Saldaña de la Riva, L. & Campbell, J. A. (2000) A new allopatric species of Xenosaurus (Squamata: Xenosauridae) from Guerrero, Mexico. Herpetologica, 56, 500–506.
Read, C. P. & Amrein, Y. U. (1953) North American nematodes of the genus Pharyngodon Diesing (Oxyuridae). Journal of Parasitology, 39, 365–370.