Nymphs of the Northeastern Nearctic Species of Rhithrogena Eaton, 1885 (Ephemeroptera: Heptageniidae): Descriptions and key
The Taxonomy of the North American Species of Parameletus Bengtsson, 1908 (Ephemeroptera: Siphlonuridae), with Keys to Nymphs and Male Imagos
Heptageniidae of the World: Part II
