Longshaw Matt, Pursglove Mark, Shinn Andrew P
CEFAS Weymouth Laboratory, Barrack Road, The Nothe, Weymouth, Dorset, DT4 8UB, UK.
Syst Parasitol. 2003 Jun;55(2):151-7. doi: 10.1023/a:1024059019691.
Gyrodactylus quadratidigitus n. sp. (Monogenea, Gyrodactylidae) is described from the gills, fins and skin of Thorogobius ephippiatus (Lowe) (leopard-spotted goby) from Portland Castle Bay, Dorset, UK. G. quadratidigitus n. sp. most closely resembles the species of Gyrodactylus previously described by Geets from Pomatoschistus microps (Krøyer) in the approximate shape and size of the attachment hooks but can be readily distinguished from other species of the genus by the distinctive square shape of the toe region of the marginal hook sickle, the anteriorly positioned cirrus bulb and the unusually short intestinal crura which extend only as far as the level of the testes.
四方指三代虫（单殖吸虫纲，三代虫科）是从英国多塞特郡波特兰城堡湾的豹纹虾虎鱼（Thorogobius ephippiatus，洛氏）的鳃、鳍和皮肤中描述出来的。四方指三代虫与Geets之前从细纹虾虎鱼（Pomatoschistus microps，克罗耶）描述的三代虫物种在附着钩的大致形状和大小上最为相似，但可以通过边缘钩镰的趾区独特的方形形状、位于前部的阴茎球以及仅延伸到睾丸水平的异常短的肠支很容易地与该属的其他物种区分开来。
