CLADOENDESIS OF EPHEMEROPTERA

Classif. ABC

z 

Baetungilata - Nigrobaetis/g*

nigra Linnaeus 1761 [Ephemera]

Russia, S.-Petersburg, Peterhoff Canal near Glyadino, 11.V.2008 photo: N.Kluge

nigra [Ephemera] & bifidum [Cloeon]: