Kritsky Delane C, Vianna Rogério T, Boeger Walter A
Department of Health and Nutrition Sciences, Idaho State University, Campus Box 8090, Pocatello, Idaho 83209, USA.
Syst Parasitol. 2007 Jan;66(1):1-34. doi: 10.1007/s11230-006-9053-7. Epub 2006 Sep 14.
The diagnosis of Phanerothecium Kritsky & Thatcher, 1977 is amended, and Phanerothecioides n. g., Onychogyrodactylus n. g. and Aglaiogyrodactylus n. g., all comprised of oviparous gyrodactylids (Monogenoidea: Polyonchoinea), are proposed to accommodate 11 of the 15 species (14 new to science) herein described and/or reported from loricariid and pimelodid catfishes (Teleostei: Siluriformes) in Brazil: Phanerothecium harrisi Kritsky & Boeger, 1991, P. spinatoides n. sp. and P. deiropedeum n. sp. all from Hypostomus spp.; P. spinulatum n. sp. from Hypostomus cf. regani; Phanerothecioides agostinhoi n. g., n. sp. (type-species) from Hypostomus spp. and Pseudoplatystoma fasciatum; Onychogyrodactylus sudis n. g., n. sp. (type-species) and O. hydaticus n. sp. both from Ancistrus multispinus; Aglaiogyrodactylus forficulatus n. g., n. sp. (type-species) from Kronichthys lacerta; A. pedunculatus n. sp. from Hisonotus sp.; A. guttus n. sp. from Pseudotothyris obtusa; A. salebrosus n. sp., A. conei n. sp. and A. ctenistus n. sp. all from Pareiorhaphis parmula; and A. calamus n. sp. and A. forficuloides n. sp. both from Schizolecis guntheri. Phanerothecioides n. g. is characterised by oviparous forms lacking superficial and deep haptoral bars and pregermarial vitelline follicles, and by having a conspicuous testis in adult specimens, a syncytial prostatic gland, a reduced copulatory sac and vitelline ducts in the form of an inverted 'U'. Onychogyrodactylus n. g. is differentiated from all other oviparous gyrodactylid genera by its members having a spine-like accessory sclerite enclosed in a separate pouch associated with the terminal male genitalia. Species of Aglaiogyrodactylus n. g. possess H-shaped vitelline ducts and a complex accessory piece and sclerotised or non-sclerotised male copulatory organ enclosed within the copulatory sac.
对1977年克里茨基和撒切尔所定的显孔吸虫属（Phanerothecium）的诊断进行了修订，并提出了新属拟显孔吸虫属（Phanerothecioides）、爪形三代虫属（Onychogyrodactylus）和艾氏三代虫属（Aglaiogyrodactylus），它们均由卵生三代虫（单殖吸虫纲：多钩亚纲）组成，用于容纳本文描述和/或报道的来自巴西甲鲶科和油鲶科鲶鱼（硬骨鱼纲：鲶形目）的15个物种中的11个（14个新物种）：哈里斯显孔吸虫（Phanerothecium harrisi Kritsky & Boeger, 1991）、刺样显孔吸虫（P. spinatoides n. sp.）和德氏显孔吸虫（P. deiropedeum n. sp.），均来自下口鲶属（Hypostomus spp.）；小刺显孔吸虫（P. spinulatum n. sp.）来自似雷氏下口鲶（Hypostomus cf. regani）；阿戈斯蒂尼奥拟显孔吸虫（Phanerothecioides agostinhoi n. g., n. sp.）（模式种）来自下口鲶属物种和黑纹石斑油鲶（Pseudoplatystoma fasciatum）；苏氏爪形三代虫（Onychogyrodactylus sudis n. g., n. sp.）（模式种）和水栖爪形三代虫（O. hydaticus n. sp.）均来自多棘 Ancistrus multispinus；叉状艾氏三代虫（Aglaiogyrodactylus forficulatus n. g., n. sp.）（模式种）来自拉氏克氏鲶（Kronichthys lacerta）；柄状艾氏三代虫（A. pedunculatus n. sp.）来自希氏甲鲶属（Hisonotus sp.）物种；斑点艾氏三代虫（A. guttus n. sp.）来自钝拟刀鲶（Pseudotothyris obtusa）；粗糙艾氏三代虫（A. salebrosus n. sp.）、科氏艾氏三代虫（A. conei n. sp.）和栉状艾氏三代虫（A. ctenistus n. sp.）均来自细鳞副齿甲鲶（Pareiorhaphis parmula）；以及菖蒲艾氏三代虫（A. calamus n. sp.）和叉状似艾氏三代虫（A. forficuloides n. sp.）均来自冈氏裂甲鲶（Schizolecis guntheri）。拟显孔吸虫属的特征是卵生形态，缺乏表膜和深层交接器横棒以及胚前卵黄滤泡，并且成年标本中有明显的睾丸、合胞体前列腺、缩小的交配囊和呈倒“U”形的卵黄管。爪形三代虫属与所有其他卵生三代虫属的区别在于其成员具有一个棘状辅助硬片，该硬片包在一个与雄性生殖器末端相关的单独囊中。艾氏三代虫属的物种具有“H”形卵黄管以及一个复杂的辅助片和位于交配囊内的硬化或未硬化的雄性交配器官。
