The Key Laboratory of Jiangsu Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China..
Zootaxa. 2021 Jan 11;4903(4):zootaxa.4903.4.5. doi: 10.11646/zootaxa.4903.4.5.
The potamanthid mayfly genus Rhoenanthus Eaton, which was not investigated systematically before in China, is revised herein. Six species in the subgenus Potamanthindus are recognized. Among them, R. sapa, R. obscurus and R. coreanus are new records for this country, and the presence in China of the species R. magnificus and R. hunanensis is confirmed, the nymphal stage of the latter species being described for the first time. Phylogenetically and evolutionarily, R. sapa, which has shorter maxillary and labial palpi, foretibiae and less setaceous mouthparts and forelegs, is close to the plesiomorphic genus Potamanthus. At the same time, R. youi, R. obscurus and R. coreanus, which have larger tusks and spines, longer and more setaceous foretibiae, maxillary and labial palpi, are somewhat similar to the other subgenus Rhoenanthus (Rhoenanthus). The Chinese Rhoenanthus (Potamanthindus) species indicate that the genus Rhoenanthus is closer to Anthopotamus rather than Potamanthus, both of them bearing elongated mandibular tusks.
本文修订了之前在中国尚未进行系统研究的 Potamanthid 蜉蝣属 Rhoenanthus Eaton。在亚属 Potamanthindus 中，共确认了 6 个种。其中，R. sapa、R. obscurus 和 R. coreanus 为本国新记录种，确认了 R. magnificus 和 R. hunanensis 在中国的存在，首次描述了后者的若虫阶段。在系统发育和进化上，具有较短的下颚和唇须、前腿和较少刺状口器和前腿的 R. sapa 与较原始的 Potamanthus 属接近。同时，R. youi、R. obscurus 和 R. coreanus，具有较大的獠牙和刺、更长和更刺状的前腿、下颚和唇须，与另一个亚属 Rhoenanthus (Rhoenanthus) 有些相似。中国的 Rhoenanthus (Potamanthindus) 种表明，Rhoenanthus 属更接近 Anthopotamus，而不是 Potamanthus，它们都具有细长的下颌獠牙。
