From 1883 to 1909 they described 63 genera and 366 species.

In these papers, he had formally described six species, three genera, and one family.

Current research suggests that the two described genera should be merged into one.

Seven species in six described genera have been recorded from the fossil record.

He described eight genera and about 200 new species.

He described many new genera and species, a high proportion of which remain valid.

There are two described genera with over twenty species.

In this group he studied the world fauna describing many new genera and species.

He described 9 genera and 471 species of insects.

He published about eighty works, describing new genera (see below), and species.