The Phylogenetic System of Ephemeroptera [Paperback]

From the reviews:

This volume by Nikita Kluge of the St. Petersburg State University, Russia, has been one of the most anticipated among ephemeropterists & . is an important milestone in Ephemeroptera phylogeny and should be mandatory reading for everyone interested in mayfly systematics. It is mainly an enumeration of the putative apomorphic characters of fossil and extant mayfly taxa, mostly accompanied by excellent line-drawings, which are very informative. However in my opinion, Kluges nomenclature is ... used as a tool by scientists for communicating with one another. (T. Soldan, European Journal of Entomology, Vol. 104, 2007)