Caenis rivulorum: a. mesonotum, dorsal, male (scale: 0.1 mm); b. pro- and mesosternum, male (scale: 0.1 mm); c. mesonotum, lateral, female (scale: 0.1 mm); d. anntenae, female (scale: 0.05 mm).

 
  Part of: Takayanagi T, Yoshizawa K (2021) The first record of Caenis rivulorum (Ephemeroptera: Caenidae) from Japan. Biodiversity Data Journal 9: e67413. https://doi.org/10.3897/BDJ.9.e67413