Protogonostyli developing under cuticle of male last instar larvae: a. Philibaetis luzonensis comb. nov.; b. Philibaetis realonae comb. nov.; c. Labiobaetis type of folding, Labiobaetis pelingeni Kaltenbach, Garces & Gattolliat, 2020; d. Baetis type of folding, Baetis rhodani (Pictet, 1843).
Part of: Kaltenbach T, Garces JM, Gattolliat J-L (2021) Philibaetis gen. nov., a new genus from the Philippines (Ephemeroptera, Baetidae). Deutsche Entomologische Zeitschrift 68(1): 1-20. https://doi.org/10.3897/dez.68.59462