de Chambrier Alain, Takemoto Ricardo M, Pavanelli Gilberto C
Département des Invertébrés, Muséum d'Histoire Naturelle, CP 6434, 1211 Geneva 6, Switzerland.
Syst Parasitol. 2006 Jul;64(3):191-202. doi: 10.1007/s11230-006-9031-0. Epub 2006 May 5.
The cestode Nomimoscolex sudobim Woodland, 1935 (Proteocephalidea) is redescribed on the basis of its type-specimens and recently collected material found in the intestine of the 'sudobim' Pseudoplatystoma fasciatum (Siluriformes: Pimelodidae) (type-host), from the Amazon River (near the type-locality). Nomimoscolex pertierrae n. sp. is described from the 'surubi' Pseudoplatystoma corruscans from the Paraná River around Porto Rico. Among fifteen known Nomimoscolex species, only N. sudobim possess a cortical uterus in combination with osmoregulatory canals some distance internal to the proglottis margins, as in N. pertierrae n. sp. N. pertierrae differs from N. sudobim, which exhibits the most similarity with the former species, in the morphology of the scolex, the size and unusual shape of microtriches (slender digitiform) on the internal and marginal regions of the suckers, and in the lower mean number of testes [(114 in N. pertierrae, ranging between 216 (recently collected material) and 240 (type-material) in N. sudobim)]. The material described as N. sudobim by Pavanelli & Rego (1992) from the intestine of P. corruscans is considered to be N. pertierrae. The utility of microtriches as characters for distinguishing between species is demonstrated in the clear differences in the shape of those of N. pertierrae and N. sudobim. The morphology of microtriches warrants more attention in future studies on the taxonomy of proteocephalidean cestodes.
基于1935年伍德兰所描述的绦虫类诺米莫斯科莱克斯·苏多宾（Proteocephalidea）的模式标本以及最近在“苏多宾”（Pseudoplatystoma fasciatum，鲇形目：油鲶科）（模式宿主）肠道中采集到的材料，对其进行了重新描述，这些材料采自亚马逊河（靠近模式产地）。新种诺米莫斯科莱克斯·佩尔蒂埃拉（Nomimoscolex pertierrae n. sp.）是从波多黎各附近巴拉那河的“苏鲁比”（Pseudoplatystoma corruscans）中描述的。在已知的15种诺米莫斯科莱克斯物种中，只有苏多宾诺米莫斯科莱克斯与佩尔蒂埃拉新种一样，在节片边缘内部一定距离处具有皮质子宫和渗透调节管。佩尔蒂埃拉新种与苏多宾诺米莫斯科莱克斯不同，后者与前者最为相似，区别在于头节形态、吸盘内部和边缘区域微毛（细长指状）的大小和异常形状，以及睾丸平均数量较少[佩尔蒂埃拉新种有114个，苏多宾诺米莫斯科莱克斯在最近采集的材料中有216个，模式材料中有240个]。帕瓦内利和雷戈（1992年）从科鲁斯卡纳假鲶肠道中描述为苏多宾诺米莫斯科莱克斯的材料被认为是佩尔蒂埃拉新种。微毛形状在佩尔蒂埃拉新种和苏多宾诺米莫斯科莱克斯之间的明显差异证明了微毛作为区分物种特征的实用性。在未来对原头蚴绦虫分类学的研究中，微毛的形态值得更多关注。
