Pinto Taciana Kramer, Neres Patricia Fernandes
Laboratório de Ecologia Bentônica, UE Penedo, Campus Arapiraca, UFAL. Av. Beira Rio s/n, Centro Histórico, Penedo, AL, Brazil.
Zootaxa. 2020 Jan 10;4722(1):zootaxa.4722.1.1. doi: 10.11646/zootaxa.4722.1.1.
Free-living marine nematodes of continental shelf of Portugal were studied through the goals of the Marine Biodiversity Information System Project (M@rbis 2015). Four species unknown to science and belonging to the families Axonolaimidae, Chromadoridae, Desmodoridae and Xyalidae are described. Besides Hypodontolaimus golikovy, Hypodontolaimus portuguese sp. n. is the only species in this genus which lacks precloacal supplements and gubernaculum but differs from the former mainly in cephalic setae length and amphidial fovea features. Metachromadora aliusa sp. n. doesn't have a unique diagnostic character, differing in many aspects from the other species of the genus instead, mainly teeth number in the buccal cavity, size of the cephalic setae and the amphidial fovea, velum presence in the spicules, number and shape of the precloacal supplements. The main character of Odontophora sinapophysis sp. n. is the absence of apophysis in the gubernaculum. Stylotheristus multipapillatus sp. n. is characterized by the presence of precloacal supplements (papilliform) and the gubernaculum formed by only a piece.
通过海洋生物多样性信息系统项目（M@rbis 2015）的目标，对葡萄牙大陆架的自由生活海洋线虫进行了研究。描述了四种科学上未知的物种，它们分别属于轴咽线虫科、色矛线虫科、链环线虫科和希阿利线虫科。除了戈利科维氏低齿线虫外，葡萄牙低齿线虫是该属中唯一缺少泄殖腔前补充器和引带的物种，但与前者的主要区别在于头部刚毛长度和头感器特征。新种阿利乌萨变色矛线虫没有独特的诊断特征，而是在许多方面与该属的其他物种不同，主要在于口腔内的齿数、头部刚毛的大小和头感器、交合刺中的膜、泄殖腔前补充器的数量和形状。新种中华突齿线虫的主要特征是引带中没有突。新种多乳头柄线虫的特征是存在泄殖腔前补充器（乳头状），且引带仅由一块组成。
