Abstract
Charles P. Alexander is the author of 11.755 insect taxa, the large majority of which are in the four families of craneflies (Diptera, Tipuloidea). After a short biography, an overview is presented of the number of taxa in relation to biogeographical regions, families, synonyms, etc. in craneflies (11.556 names) as well as in nine other families of Diptera (198 names) and one in Plecoptera. For craneflies, the Alexander taxa cover about 70% of all species names and some 46% of the genera and subgenera of the world.