Campus de Ciências Agrárias, 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.
Departamento de Parasitologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Bloco L4 sala 252, Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte, MG31270-901, Brazil.
J Helminthol. 2023 Dec 27;97:e104. doi: 10.1017/S0022149X23000858.
A new species of Travassos, 1917 (Nematoda, Molineidae), parasite of Miranda-Ribeiro, 1926 (Anura: Leptodactylidae), from Caatinga morphoclimatic domain, Brazil, is described based on morphological and molecular data. n. sp. is characterised by an anterior extremity with a cephalic vesicle divided into two portions, a body covered by cuticular longitudinal ridges, and cervical alae. Males of the new species have caudal bursa of type I with a 2-1-2 pattern, spicules divided into a shoe, bifurcated fork, and blade with two unequal branches, in which the longer branch bifurcates at its distal portion end and the smaller branch with three distal processes, each with distal bifurcations. Females have didelphic and amphidelphic uteri, an ovijector divided into vestibule, anterior and posterior sphincters, and anterior and posterior infundibula. The new species differs from its Neotropical congeners that have caudal bursa of type I, based on the presence of cervical alae and by having a spicular blade distally divided into two unequal branches, with the longer branch bifurcating at its distal portion and smaller branch with three distal processes, each distally bifurcated. The partial 18S rDNA sequence generated for n. sp. is the first of a representative belonging to this genus in the Neotropical region.
一种新的 Travassos，1917 属（线虫纲，Molineidae）寄生虫，寄生在 Miranda-Ribeiro，1926 属（蛙形目，Leptodactylidae），来自巴西的 Caatinga 形态气候域，基于形态学和分子数据进行了描述。新种的特征是前端有一个头部囊泡，分为两部分，身体被表皮纵向脊覆盖，还有颈翼。新种的雄性具有 I 型尾囊，具有 2-1-2 模式，尾部具有分叉的叉、鞋形和叶片，叶片有两个不等的分支，较长的分支在其远端分叉，较小的分支有三个远端分支，每个分支都有远端分叉。雌性具有双胎和多胎子宫，一个卵发射器分为前庭、前和后括约肌以及前和后漏斗。新种与具有 I 型尾囊的新热带同属种不同，其特征在于具有颈翼，以及叶片远端分为两个不等的分支，较长的分支在其远端分叉，较小的分支有三个远端分支，每个分支都有远端分叉。为新种生成的部分 18S rDNA 序列是该属在新热带地区的第一个代表序列。
