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首页> 外文期刊>Zootaxa >Description of Paracrobeles deserticola sp. n. and Nothacrobeles hebetocaudatus sp. n. (Nematoda: Rhabditida: Cephalobidae) from Iran and the phylogenetic relationships of these two species
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Description of Paracrobeles deserticola sp. n. and Nothacrobeles hebetocaudatus sp. n. (Nematoda: Rhabditida: Cephalobidae) from Iran and the phylogenetic relationships of these two species

机译：Paracrobeles deserticola sp。的描述。和Nothacrobeles hebetocaudatus sp。 。伊朗（线虫：Rhabditida：头虫科）与这两个物种的系统发育关系

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摘要

Two new species of nematodes belonging to the family Cephalobidae (Nematoda, Rhabditida) are described from natural areas in the province of Kerman, Iran. Paracrobeles deserticola sp. n. is characterized by its body length of 0.48-0.60 mm in females and 0.47-0.66 mm in males, cuticle annulated and weakly tessellated into rectangular blocks with striae discontinuous across annulations, lateral field with two wings, areolated, separated by a narrow groove, lip region slightly offset, 15-20 um wide, lips asymmetrical with two long seta-like processes arising from its margin, primary axils bearing one triangular-elongate guard process, secondary axils with two setiform guard processes with one originating from each lip, labial probolae bifurcated with long and smooth prongs having a small basal ridge, stoma 11-14 um long, metacorpus swollen, spermatheca 33-50 um long, post-uterine sac 60-96 um long or 2.9^4.5 times the corresponding body diameter, vulva located slightly posterior to mid-body length (V= 50-63), female tail conical with finely rounded tip (53-67 um, c = 9.0-10.0, c' = 2.0-3.0), male tail conical and curved ventrad with finely rounded tip (48-54 um, c = 9.0-13.0, c' = 1.8-2.0), spicules 46-56 um long and curved ventrad, and gubernaculum16-24 um long. Nothacrobeles hebetocaudatus sp. n. is characterized by its body length (0.42-0.51 urn in females and 0.42-0.52 um in males), "single" cuticle, lateral field with three incisures, asymmetrical lips divided in two sections at level of thelabial papilla, each lip with four tines along its margin, primary axils deep bearing one triangular-elongate guard process originating from the incomplete first annulus, secondary axils demarcated by narrow incisures separating the lips of the pair andwithout guard processes, labial probolae bifurcated and without tines (7-11 um long), pharyngeal corpus 2.0-3.7 times isthmus length, Rcx = 28-38, spermatheca 24-55 um long or 2.9-3.8 times the corresponding body diameter, post-uterine sac 18-27 um longor 0.7-1.3 times the corresponding body diameter long, female tail conical with rounded terminus (30-36 um, c = 13.6-15.5, c' = 1.8-2.3), phasmid at 38^4% of tail length, male tail conical (28-40 um, c = 11.5-15.3, c' = 1.7-2.0), spicules 20-25 um long and gubernaculum 11-16 um long. Descriptions, measurements, illustrations and SEM pictures are provided for these two species. In addition, SEM study of N. abolafiai is presented. Molecular analysis based on 28S rDNA (D2/D3 expansion fragments) places Paracrobeles deserticola sp. n. in a clade together with N. abolafiai and N. hebetocaudatus sp. n., while other species of the genus Nothacrobeles (N. borregi, N. spatulatus and N. tringlarus) are all placed in separate clades. The results suggest that thegenus Nothacrobeles might be a polyphyletic taxon.
机译：从伊朗克尔曼省的自然地区描述了属于头虫科（Nematoda，Rhabditida）的两种新线虫。 Paracrobeles deserticola sp。 。其特征是雌性的体长为0.48-0.60 mm，雄性的体长为0.47-0.66 mm，角质层被成环并微弱地细分为矩形块，在环行中不连续有条纹，侧场有两个翼，被隔离，由狭窄的沟纹分开，嘴唇稍偏移的区域，宽15-20 um，唇缘不对称，由其边缘产生两个长的类似seta的突起，初级腋窝带有一个三角形的长形的保护突起，次级腋窝有两个楔形的保护突起，其中一个起源于每个嘴唇，唇唇前突分叉，具长而光滑的叉，基部脊小，造口长11-14 um，meta骨肿胀，精子长33-50 um，子宫后囊长60-96 um，或相应体径的2.9 ^ 4.5倍，位于外阴略长于身体中部长度（V = 50-63），雌性尾圆锥形，尖端细圆（53-67 um，c = 9.0-10.0，c'= 2.0-3.0），雄性尾圆锥形，弯曲腹弧形，细圆头（48-54 um，c = 9.0-1 3.0，c′＝ 1.8-2.0），针状体长46-56μm，弯曲的胃管，和gubernaculum16-24μm。 Nothacrobeles hebetocaudatus sp。 。其特征是其体长（女性为0.42-0.51 ur，男性为0.42-0.52 um），“单”角质层，具有三个切口的侧向视野，不对称的嘴唇分为两部分，分别位于唇乳头水平，每个嘴唇带有四个尖齿沿其边缘，主要腋生深具一三角形伸长的保护过程，起源于不完整的第一环，次生腋生由狭窄的分界划定，分开一对的唇，无保护过程，唇前突分叉且没有尖齿（7-11微米长） ，咽体长度为地峡长度的2.0-3.7倍，Rcx = 28-38，精子长为24-55 um或相应体径的2.9-3.8倍，子宫后囊长为18-27 um或相应体长的0.7-1.3倍，雌性尾圆锥形，具有圆形末端（30-36 um，c = 13.6-15.5，c'= 1.8-2.3），在尾长的38 ^ 4％处的噬菌体，雄性尾圆锥形（28-40 um，c = 11.5-） 15.3，c'＝ 1.7-2.0），针状体长20-25μm，虎耳草长11-16μm。提供了这两个物种的描述，测量，插图和SEM图片。另外，提出了对农杆菌的SEM研究。基于28S rDNA（D2 / D3扩展片段）的分子分析将放置Paracrobeles deserticola sp.。 。与a。abolafiai和N. hebetocaudatus sp。一起进化。 n。而其他种类的Nothacrobeles（N。borregi，N。spatulatus和N. tringlarus）都放在单独的进化枝中。结果表明，Nothacrobeles属可能是一个多系分类群。

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