Description of Labiduris Argentinensis sp. Nov. (Nematoda: Cosmocercoidea: Atractidae) a new species of nematode in Chelonoidis Chilensis gray, 1870 (Testudines: Testudinidae) for Argentina

Authors

  • Cynthia J. González-Rivas Centro de Rehabilitación de Fauna Silvestre, Educación Ambiental y Recreación Responsable, San Juan, Argentina. Ruta Provincial N° 60 KM 14 5400 Rivadavia, San Juan, Argentina. - Parasitología en animales silvestre. Departamento de Biología, Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de San Juan. Av. Ignacio de la Roza 590, 5402, San Juan, Argentina. https://orcid.org/0000-0001-8294-6999
  • Gabriel N. Castillo Parasitología en animales silvestre. Departamento de Biología, Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de San Juan. Av. Ignacio de la Roza 590, 5402, San Juan, Argentina. - CIGEOBIO- CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas). Av. Ignacio de la Roza 590, San Juan, Argentina. https://orcid.org/0000-0003-1519-9457
  • Iván Simoncelli Centro de Rehabilitación de Fauna Silvestre, Educación Ambiental y Recreación Responsable, San Juan, Argentina. Ruta Provincial N° 60 KM 14 5400 Rivadavia, San Juan, Argentina. https://orcid.org/0009-0002-1251-6293

DOI:

https://doi.org/10.62429/rnh20242181893

Keywords:

Argentina, Atractidae, Labiduris, nematode, San Juan, turtle

Abstract

We describe a new species of Labiduris (Thapar, 1925) (Cosmocercoidea: Atractidae) collected from the long intestine of the land turtle Chelonoidis chilensis Gray 1870 in Argentina. Labiduris argentinensis sp. nov. differs from Labiduris gulosa (Rudolphi, 1819) (the only valid species of the genus), by the type and geographic distribution of the host, position of the excretory pore, body size and tail of the male and female nematodes. The new species has an excretory pore at the level of the middle widening of the esophagus, smaller body size, short and truncated tail, and is found in a terrestrial turtle with restricted distribution in Argentina. These characteristics of the new species are different from those of L. gulosa, which has an excretory pore in front of the bulb and a long, pointed tail and a larger body. The new species L. argentinensis sp. nov. represents the second valid species for the genus Labiduris.

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Published

2024-12-26

How to Cite

González-Rivas, C. J. ., N. Castillo, G. ., & Simoncelli, I. . (2024). Description of Labiduris Argentinensis sp. Nov. (Nematoda: Cosmocercoidea: Atractidae) a new species of nematode in Chelonoidis Chilensis gray, 1870 (Testudines: Testudinidae) for Argentina. Neotropical Helminthology, 2(18). https://doi.org/10.62429/rnh20242181893