Branchiobaetis megasinus sp. nov. a apex of right mandible b hypopharynx and superlinguae c accessory gill between stipes and cardo of maxilla d apex of maxillary palp e maxilla f villopore of femur. Abbreviations: st: stipes, ca: cardo. Red arrows indicate the tongue-like accessory gill (c, e).

 
 
  Part of: Tong X, Zhou Z, Wu B (2024) First contribution to the genera Branchiobaetis and Megabranchiella (Ephemeroptera, Baetidae) in China, with descriptions of two new species. ZooKeys 1216: 115-148. https://doi.org/10.3897/zookeys.1216.129803