Abstract：
Bolbolaimus major sp. nov. is described from Rizhao coast along the Yellow Sea. The new species is characterized by relatively large body size, cuticle strongly annulated, six outer labial sensilla setiform, four cephalic setae long, buccal cavity wide with one large dorsal tooth and two small subventral teeth, amphidial fovea unispiral shaped oval in males and circular in females, spicules curved with swollen proximal end, gubernaculum with anterior-hooked dorso-caudal apophysis, and tail conical with short spinneret. A phylogenetic analysis of maximum-likelihood and Bayesin inference based on rDNA sequences confirms the taxonomic position of Bolbolaimus major sp. nov. within the family Microlaimidae. Tree topology in Microlaimidae shows genus Microlaimus as polyphyletic group and genera in Microlaimidae are closely related.
摘要：
Bolbolaimus少校sp.11月。是从黄海沿岸的日照海岸描述的。新物种的特点是体型相对较大，角质层强烈成环，六个外唇感觉型，四个头刚毛长，颊腔宽，有一个大的背牙齿和两个小的腹下牙齿，两栖类中央凹在雄性中呈椭圆形，在雌性中呈圆形，针状弯曲，近端肿胀，前钩状背尾骨突，和带有短喷丝头的圆锥形尾巴。基于rDNA序列的最大似然和贝叶斯推断的系统发育分析证实了Bolbolaimusmajorsp的分类学位置。11月。在Microlaimidae家族中。Microlaimidae的树拓扑显示Microlaimus属为多系群，与Microlaimidae属密切相关。
