Ramallo Geraldine, Bursey Charles R, Goldberg Stephen R
Instituto de Invertebrados, Fundación Miguel Lillo, San Miguel de Tucumán, Argentina.
J Parasitol. 2002 Oct;88(5):979-82. doi: 10.1645/0022-3395(2002)088[0979:PRNSNP]2.0.CO;2.
Two hundred and forty-four specimens of Parapharyngodon riojensis n. sp. were found in the large intestines of 2 adult lizards Phymaturus punae collected from Quebrada del Leoncito, Province of La Rioja, Argentina. Parapharyngodon riojensis n. sp. represents the ninth species of the genus from the Neotropical Realm and the first species to be described from Argentina. It can be distinguished from all species of Parapharyngodon on the basis of the morphology of the anterior cloacal lip, the location of the ovary, and geographical distribution. Parapharyngodon riojensis n. sp. is most similar to P. senisfaciecaudus in that the ovary does coil around the esophagus and the number and location of caudal papillae in the males are the same. These 2 species differ in that the eggs of P. senisfaciecaudus are slightly asymmetrical, with a smooth, thin shell, whereas the eggs of P. riojensis are oval, with a punctate thick shell. In addition, the cloacal lip of males of P. senisfaciecaudus is smooth, whereas the cloacal lip of males of P. riojensis is echinate. A key to the species of Parapharyngodon in the Neotropical Realm is provided.
在从阿根廷拉里奥哈省莱昂西托河采集的2只成年普纳肥尾守宫蜥蜴的大肠中，发现了244个里奥哈副咽齿线虫新种标本。里奥哈副咽齿线虫新种是新热带界该属的第九个物种，也是阿根廷描述的首个该属物种。基于泄殖腔前唇的形态、卵巢位置和地理分布，它可与副咽齿线虫属的所有物种区分开来。里奥哈副咽齿线虫新种与老年尾面副咽齿线虫最为相似，因为卵巢确实围绕食管盘绕，且雄性尾乳头的数量和位置相同。这两个物种的不同之处在于，老年尾面副咽齿线虫的卵略不对称，壳光滑、薄，而里奥哈副咽齿线虫的卵呈椭圆形，壳有小孔且厚。此外，老年尾面副咽齿线虫雄性的泄殖腔唇光滑，而里奥哈副咽齿线虫雄性的泄殖腔唇有棘。提供了新热带界副咽齿线虫属物种的检索表。
