Programa de Pós-graduação em Biologia Parasitária, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz - Fiocruz, Rio de Janeiro, RJ, Brasil.
Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz - - Fiocruz, Rio de Janeiro, RJ, Brasil.
Rev Bras Parasitol Vet. 2021 May 28;30(2):e000521. doi: 10.1590/S1984-29612021031. eCollection 2021.
A new species of Trichostrongyloidea (Nematoda: Heligmonellidae), Hassalstrongylus lauroi n. sp., is described from specimens collected from the small intestine of the rodent Hylaeamys seuanezi in the Atlantic Forest of northeastern Brazil (Igrapiúna, state of Bahia). The genus Hassalstrongylus includes 17 species, which parasitize rodents occurring in the Neotropical and Nearctic regions. It differs from the genus Stilestrongylus through its smaller number of ridges in the synlophe and through the size of the genital cone. The main taxonomic characteristics of this new species are the subsymmetrical caudal bursa of type 2-2-1, ray 8 branching out at the base of the dorsal trunk, right lobe smaller than the left, and rays 4 and 5 of robust nature. In addition, the ornamental ray 5 and the robustness of ray 4 on the male caudal bursa, along with the modification of the ridges of the posterior end of the female, allow us to consider the specimens found to be a new species.
一种新的旋毛线虫（Nematoda: Heligmonellidae），Hassalstrongylus lauroi n. sp.，从巴西东北部大西洋森林的啮齿动物Hylaeamys seuanezi 的小肠中采集的标本中描述。 Hassalstrongylus 属包括 17 种，寄生在新热带和近北极地区的啮齿动物中。它与 Stilestrongylus 属的区别在于其在 synlophe 中的脊数量较少，以及生殖器锥体的大小。这个新物种的主要分类特征是 2-2-1 型的对称尾囊，射线 8 在背干基部分支，右叶小于左叶，以及强壮的 4 号和 5 号射线。此外，雄性尾囊上装饰性的射线 5 和射线 4 的坚固性，以及雌性后端脊的修饰，使我们认为发现的标本是一个新物种。
