Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Centro de Ecología Aplicada del Litoral (CECOAL), Ruta Provincial Número 5, km 2,5, CP. 3400, Corrientes, Argentina.
Programa de Pós-Graduação em Parasitologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte, MG, CEP 31270-901, Brazil.
Syst Parasitol. 2024 Nov 22;102(1):8. doi: 10.1007/s11230-024-10204-w.
Cruzia Travassos, 1917 is a diverse genus of nematode parasites in amphibians, reptiles, and mammals. During a parasitological survey, specimens of Cruzia were found in the intestine of the lizards Ameiva ameiva (Linnaeus) and Teius teyou (Daudin) (Squamata: Teiidae) at the Chaco region, Formosa province, Argentina. A comparative analysis revealed that these nematodes represent a new species, named as Cruzia toba n. sp. The new species can be distinguished from the congeners based on the combination of the following features: presence 12-14 teeth per row in the pharynx, equatorial vulva in females, and number and arrangement of caudal papillae in males (11 pairs: 3 precloacal, 3 paracloacal, 5 postcloacal; plus a precloacal minute unpaired papilla). Cruzia toba n. sp. is closely related to C. lauroi Vieira, Gonçalves, Lima, Sousa, and Muniz-Pereira, 2020 a likewise parasite of lizards, regarding the length of spicules and the presence of an unpaired papilla in males, but differs from it in the position of the vulva, the size of the gubernaculum and in the number and arrangement of caudal papillae. This is the first report of a representative of Kathlaniidae parasitizing A. ameiva and T. teyou, and the first Cruzia infecting lizards from Argentina. The morphological affinities among species of Cruzia are mostly random, not allowing a morphological grouping of these parasites in relation to their host taxa, or geographic origin. Thus, the speciation process in Cruzia most likely occurred via host capture.
克鲁齐亚 Travassos, 1917 是一类广泛存在于两栖类、爬行类和哺乳类动物中的线虫寄生虫。在对查科地区（阿根廷福尔摩沙省）蜥蜴的寄生线虫进行调查时，在 Ameiva ameiva（Linnaeus）和 Teius teyou（Daudin）（有鳞目：Teiidae）的肠道中发现了克鲁齐亚属的标本。比较分析表明，这些线虫代表了一个新物种，被命名为克鲁齐亚托巴 n. sp. 新物种可以通过以下特征的组合与同属种区分开来：咽部每排有 12-14 个齿、雌性赤道部有阴道、雄性尾端有 11 对（3 个前肛、3 个后肛、5 个后肛；加上一个前肛微小的单配对）尾端乳突的数量和排列。克鲁齐亚托巴 n. sp. 与克鲁齐亚劳氏属（Vieira, Gonçalves, Lima, Sousa, and Muniz-Pereira, 2020）的寄生虫相似，都是蜥蜴的寄生虫，有关尾端乳突的数量和排列、雄虫的具刺状结构和单配对乳突的长度，但与后者在阴道位置、尾端乳突的大小和排列方面存在差异。这是首次报道 Kathlaniidae 科寄生虫寄生在 A. ameiva 和 T. teyou 上，也是克鲁齐亚属首次感染阿根廷的蜥蜴。克鲁齐亚属种间的形态相似性大多是随机的，不允许根据宿主分类群或地理起源对这些寄生虫进行形态分组。因此，克鲁齐亚属种的物种形成过程很可能是通过宿主捕获发生的。
