Choi Hyun Ki, Jung Tae Won, Yoon Seong Myeong
National Marine Biodiversity Institute of Korea, Seocheon, Chungcheongnam-do 33662, Korea..
Zootaxa. 2018 Oct 26;4504(4):586-594. doi: 10.11646/zootaxa.4504.4.9.
Two new cirratulid polychaetes of the genus Aphelochaeta collected from Korean waters are reported here along with detailed descriptions and illustrations. Aphelochaeta petila n. sp. is readily distinguished from its congeners by the following characteristics: non-expanded anterior and posterior ends of the body; non-moniliform segments in the abdomen; peristomium with three annulations and an indistinct dorsal crest; both the dorsal tentacles and the first branchiae attached on the peristomium; presence of only a pair of branchiae on chaetiger 1; and the ventrum of the thoracic region with transverse dark blue stripes on the chaetigers 6-16 with methyl green staining. Aphelochaeta intinctoria n. sp. is characterized by a combination of the following features: a rounded prostomium; a peristomium with a dorsal crest; a non-expanded thoracic region; dorsal tentacles on the peristomium and the first pair of branchiae on chaetiger 1; and the thoracic region lacking a distinct methyl green staining pattern. These two new species from Korean waters also differ in details of chaetal ultrastructure.
本文报道了从韩国海域采集到的两个新的阿费洛沙蚕属（Aphelochaeta）蛰龙介科多毛类动物，并给出了详细的描述和图示。新物种细纹阿费洛沙蚕（Aphelochaeta petila n. sp.）易于通过以下特征与同属其他物种区分开来：身体前后端不扩张；腹部各节不成念珠状；围口节有三个环节和一条不明显的背嵴；背触手和第一对鳃都附着在围口节上；仅在第1刚节有一对鳃；用甲基绿染色后，胸部区域腹面的第6 - 16刚节有横向深蓝色条纹。新物种染色阿费洛沙蚕（Aphelochaeta intinctoria n. sp.）具有以下特征组合：口前叶圆形；围口节有背嵴；胸部区域不扩张；围口节上有背触手，第1刚节有第一对鳃；胸部区域没有明显的甲基绿染色模式。这两个来自韩国海域的新物种在刚毛超微结构的细节上也有所不同。
