Buckner R L, Nickol B B
J Parasitol. 1979 Feb;65(1):161-6.
Specimens of the 4 known species of Fessisentis, acquired through new collections in 6 states and laboratory infections, were compared with existing descriptions and collections. It was concluded that the number od longitudinal rows of proboscis hooks and lengths of proboscis receptacles, largest proboscis hooks, and reproductive systems are not useful in distinguishing the species. Egg size is of limited usefulness. Regardless of host or geographical locality, proboscis shape and length, the number of proboscis hooks in each longitudinal row, hook shape and size distribution, number of testes, number of cement glands, and female genital pore position are consistent differences. Cystacanths of Fessisentis fessus occurred in aquatic isopods, Asellus forbesi and Lirceus lineatus, in Jackson County, Illinois, where Siren intermedia is the usual definitive host. Laboratory infections confirmed the life cycle of this species.
通过在6个州的新采集以及实验室感染获得的4种已知费氏绦虫属物种的标本，与现有的描述和标本进行了比较。得出的结论是，吻钩的纵向行数、吻鞘长度、最大的吻钩以及生殖系统在区分物种方面并无用处。卵的大小作用有限。无论宿主或地理位置如何，吻的形状和长度、每排纵向吻钩的数量、钩的形状和大小分布、睾丸数量、粘腺数量以及雌性生殖孔位置都存在一致的差异。费氏费氏绦虫的囊尾蚴出现在伊利诺伊州杰克逊县的水生等足类动物福布斯阿氏钩虾和细纹利尔钩虾体内，中间鳗螈是其常见的终末宿主。实验室感染证实了该物种的生命周期。
