(Caenis) (Caenis) is a biological genus in the family Caenidae and order Ephemeroptera (Mayflies).
Caenis amica
Caenis anceps
Caenis arwini
Caenis bajaensis
Caenis candida
Caenis diminuta
Caenis eglinensis
Caenis hilaris
Caenis latipennis
Caenis macafferti
Caenis punctata
Caenis tardata
Caenis youngi
Alloretochus
Amercaenis
Brachycercus
Caenis
Caenoculis
Cercobrachys
Insulibrachys
Latineosus
Oriobrachys
Sparbarus
Susperatus