Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
Campus de Porto Nacional, Laboratório de Ictiologia Sistemática, Universidade Federal do Tocantins, Porto Nacional, Brazil.
J Fish Biol. 2023 Jul;103(1):91-102. doi: 10.1111/jfb.15410. Epub 2023 May 10.
A new species of Phalloceros is described from the Tijucas, Maruim, Aririú, Cubatão do Sul, Rio da Madre, D'Una and Tubarão river basins in southern Brazil. The new species is diagnosed among congeners by the bilateral asymmetry of a hood-like structure located immediately anterior to the urogenital papilla of females. The hood is fused with the urogenital papilla on the right side, but free from the papilla on the left side. This hood is reported for the first time in the genus and is present in six of the 21 valid species of Phalloceros, but its bilateral asymmetry is an exclusive condition of the new species. These species do not constitute a monophyletic group. The new species is likely to be phylogenetically related to P. caudimaculatus, whose females have a symmetrical hood.
描述了来自巴西南部的蒂茹卡斯、马鲁伊姆、阿里里乌、库巴唐杜苏尔、里奥达马德拉、杜纳和图巴朗河流域的一个豺新种。新种在同种中通过位于雌性尿殖肛门前部的一个帽状结构的双侧不对称来诊断。该帽状结构与右侧的尿殖肛乳头融合，但与左侧的肛乳头分离。这种帽状结构在该属中是首次报道的，存在于 21 个有效豺种中的 6 个种中，但双侧不对称是新种的特有条件。这些物种不构成一个单系群。新种可能与具有对称帽状结构的雌性的 P. caudimaculatus 在系统发育上有关。
