Rezaei Soheila, Pourjam Ebrahim, Atighi Mohammad Reza, Pedram Majid
Department of Plant Pathology, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran.
J Nematol. 2024 Apr 22;56(1):20240015. doi: 10.2478/jofnem-2024-0015. eCollection 2024 Mar.
n. sp. was recovered from rotten wood samples of an unidentified forest tree in the Mazandaran province and described herein. It is mainly characterized by an elongated conoid tail ending in a sharply pointed tip and four lines in the lateral field. Females of the new species have 379-662 μm long bodies with 5.8-6.9 μm long stylets ending in fine posteriorly sloping knobs, the metacorpus not valvate, the pharyngeal bulb slightly overlapping the intestine, and the vulva at 76.5-84.0% of body length. Males are also common and have 13.0-14.5 μm long spicules and bursa cloacal. By having an elongated conoid tail and four lines in the lateral field, the new species comes close to four known species, namely , and . The morphological differences between the new species and the abovementioned species are discussed. The new species was sequenced for its D2-D3 segment of LSU and ITS rDNA regions. In the LSU phylogenetic tree, the currently available LSU sequences of the genus occupied distant placements from each other and the LSU sequence of the new species formed clade with a sequence assigned to sp. In ITS phylogeny, the newly generated sequence of the new species formed a clade with a clade that includes sequences of sp. and and .
新种线虫是从马赞德兰省一种不明树木的腐烂木材样本中分离得到，并在此进行描述。其主要特征为具细长的圆锥形尾部，末端尖锐，侧区有四条线纹。新种雌虫体长379 - 662μm，口针长5.8 - 6.9μm，末端有向后微斜的细瘤，中食道球无瓣，咽球稍与肠重叠，阴门位于体长的76.5 - 84.0%处。雄虫也较为常见，交合刺长13.0 - 14.5μm，具泄殖腔囊。由于具有细长的圆锥形尾部和侧区的四条线纹，该新种与四个已知物种，即[此处原文缺失四个已知物种的名称]相近。讨论了新种与上述物种之间的形态差异。对新种的 LSU 和 ITS rDNA 区域的 D2 - D3 片段进行了测序。在 LSU 系统发育树中，该属目前可用的 LSU 序列彼此位置较远，新种的 LSU 序列与一个归为[此处原文缺失物种名称]种的序列形成一个分支。在 ITS 系统发育中，新种新生成的序列与一个包含[此处原文缺失物种名称]种和[此处原文缺失物种名称]等序列的分支形成一个分支。
