Laboratório de Helmintos Parasitos de Vertebrados, Instituto Oswaldo Cruz, FIOCRUZ. Av. Brasil 4365, Rio de Janeiro CEP 21040-900, Brazil. Programa de Pós-graduação em Biodiversidade e Saúde (PPGBS), Instituto Oswaldo Cruz, FIOCRUZ. Av. Brasil 4365, Rio de Janeiro CEP 21040-900, Brazil.
Universidade Federal do Vale do São Francisco (Univasf). Rodovia BR-407, KM 12 Lote 543 S/n Projeto de Irrigação Nilo Coelho, Petrolina, 56300-000, Brazil..
Zootaxa. 2021 May 31;4980(1):195200. doi: 10.11646/zootaxa.4980.1.12.
One species of Parapharyngodon Chatterji (Nematoda: Pharyngodonidae), parasitizing the large intestine of Tropidurus hispidus (Spix) (Squamata: Tropiduridae) in Caatinga biome from Brazil is described and illustrated . This new species differs from a part of its congeners by a set of characters in males: the presence of four pairs of caudal papillae, unpaired post cloacal papilla absent, and smooth anterior cloacal lip. Among the Parapharyngodon species with four pairs caudal papillae, unpaired post clocal papilla absent, and smooth cloacal lips, only P. hispidus n. sp. and P. jairaipurii Rizvi Bursey (Oriental realm), features the same characteristics including sharp pointed tip of spicule, stout terminus or spike of tail of females, and punctate ornamentation of the eggshell. However, these two species are different by the size of spicules (spicules of P. jairaipuri are around 55% of the size spicules of P. hispidus n. sp.); and the arrangement of the caudal papillae (two pairs of adcloacal papillae in P. jaraipuri which are absent in P. hispidus n. sp.). Parapharyngodon hispidus n. sp. is the 55th species assigned to the genus and the 11th species of this genus described in Neotropical hosts.
一种寄生在巴西卡廷加生物群中大蜥蜴属（蜥蜴目：蜥蜴科）大肠内的 Parapharyngodon Chatterji（线虫：Pharyngodonidae）被描述和图示。这个新种与部分同属种在雄性特征上有所不同：存在四对尾部乳突、无单独的尾部乳突、前部泄殖腔唇光滑。在具有四对尾部乳突、无单独的尾部乳突和光滑的泄殖腔唇的 Parapharyngodon 种中，只有 P. hispidus n. sp. 和 P. jairaipurii Rizvi Bursey（东方区）具有相同的特征，包括尖锐的刺突尖端、雌性尾部粗壮的末端或刺、蛋壳上的点状装饰。然而，这两个种在刺的大小（P. jairaipuri 的刺约为 P. hispidus n. sp. 的 55%）和尾部乳突的排列（P. jaraipuri 有两对近肛乳突，而 P. hispidus n. sp. 则没有）上有所不同。P. hispidus n. sp. 是第 55 个被归入该属的种，也是第 11 个在新热带宿主中描述的该属种。
