Five new subgenera have been erected for thirteen species including 9 new species of the genus Baetis from Taiwan, i.e., Margobaetis n. subgen. including B. taiwanensis Müller-Liebenau , B. mundus n. sp., B. gracilentus n. sp., B. terminus n. sp. and B. facetus n. sp.; Tatubaetis n. subgen. including only B. tatuensis Müller-Liebenau; Tenuibaetis n. subgen. including B. pseudofrequentus Müller-Liebenau, B. inornatus n. sp. and B. arduus n. sp. ; Mullerbaet is n. subgen. including B. molawinensis Müller-Liebenau new record and B. morus n. sp.; Acerbaetis n. subgen. including B. clivosus n. sp. and B. yehi n. sp. All species and subgenera have been described based on nymphal stage. In addition, the eggs of B. taiwanensis and B. mundus were observed via scanning electron microscopy. Key to the subgenera and species are offered.
本文建立五個新亞屬以分類分布於台灣的四節蜉蝣屬13種,其中包含9 新種,分別為:Margobaetis新亞屬,包含B. taiwanensis MüIler-Liebenau、B. mundus新種、B. gracilentus新種、B. terminus新種及B. facetus新種,Tatubaetis新亞屬,儘含B. tatuensis MüIler-Liebenau;Tenuibaetis新亞屬,包含B. pseudofrequentus MüIler-Liebenau、B. inornatus新種及B. arduus新種;MulIerbaetis新亞屬,包含B. molawinensis Müller- Liebenau新記錄及B. morus新種;Acerbaetis新亞屬,包含B. clivosus新種及B. yehi新種。所有的種類及亞屬的描述均據稚蟲的特徵。其中,B. taiwanensis 及B. mundus兩種的卵經用掃描式電子顯微鏡觀察與描述。文中附亞屬及種的檢索表。