Wu W J, Yan L, Xie H, Xu C L, Wang K, Jin S Y
Laboratory of Plant Nematology/Research Center of Nematodes of Plant Quarantine, Department of Plant Pathology,College of Agriculture, South China Agricultural University,Guangzhou,Guangdong510642,China.
Department of Grassland Sciences,Agriculture and Animal Husbandry College, Qinghai University,Xining,Qinghai810003,China.
J Helminthol. 2017 Jan;91(1):80-86. doi: 10.1017/S0022149X16000110. Epub 2016 Mar 4.
One new species from Qinghai Province, China, Labronemella major n. sp., is described. The new species is characterized by a body length of 3.03-3.34 mm; lip region wide, offset by a distinct depression, disc-like with six separated inner liplets; amphid fovea funnel-shaped, distinctly bulged on body surface in scanning electron micrographs; odontostyle long (35-39 μm) with distinct lumen, aperture about 39-47% of its length; odontophore rod-like and long; guiding ring double; pharyngeal basal expansion about half of the total neck length; uterus relatively long and tripartite; vulva transverse and sclerotized; spicules 81-90 μm long; ventromedial supplements 19-23; tail short, rounded to conoid. It can be differentiated from all other species of the genus by its relatively longer body, odontostyle and spicules, and wider lip region. Due to the lip region being offset by a deep constriction, and the long (three or more times the body diameter at mid-body) tripartite uterus, the new species is close to Labronemella czernowitzensis (Micoletzky, 1922) Andrássy, 2002 and Labronemella labiata Andrássy, 1985. An improved key to the genus including the new species is provided.
本文描述了采自中国青海省的一个新物种——大型拉布线虫Labronemella major n. sp.。该新物种的特征为：体长3.03 - 3.34毫米；唇区宽，由明显的凹陷与虫体隔开，呈盘状，有六个分离的内唇叶；头感器凹呈漏斗形，在扫描电子显微镜下在体表明显隆起；口针长（35 - 39微米），有明显的管腔，开口约为其长度的39 - 47%；食道杆状且长；引导环双层；咽基部膨大约占颈部总长度的一半；子宫相对较长且分为三部分；阴门横向且硬化；交合刺长81 - 90微米；腹中线补充器19 - 23个；尾短，圆形至圆锥形。它可通过相对较长的虫体、口针和交合刺以及较宽的唇区与该属的所有其他物种区分开来。由于唇区被深深的缢缩与虫体隔开，且子宫长（在虫体中部为虫体直径的三倍或更多倍）并分为三部分，该新物种与切尔诺维茨拉布线虫Labronemella czernowitzensis（米科莱茨基，1922）安德拉西，2002和唇形拉布线虫Labronemella labiata安德拉西，1985相近。本文提供了一个包含该新物种的该属改进检索表。
