First contribution to the genera Branchiobaetis and Megabranchiella (Ephemeroptera, Baetidae) in China, with descriptions of two new species

Abstract

Branchiobaetis Kaltenbach, Kluge & Gattolliat, 2022 and Megabranchiella Phlai-ngam & Tungpairojwong, 2022 (Ephemeroptera: Baetidae) are newly recorded in China. Two new species, Branchiobaetis borealis sp. nov. based on larval stage and Branchiobaetis megasinus sp. nov. based on larval and imaginal stages associated by laboratory rearing, are described. Megabranchiella longusa Phlai-ngam & Tungpairojwong, 2022, previously only distributed from Thailand, is recorded from China for the first time.