About 535, see text Xyleborus is by far the largest ambrosia beetle genus in the tribe Xyleborini, with over 500 species.

[1] Xyleborus nowadays includes a number of formerly independent genera.

In addition, the genera Coptoborus, Cryptoxyleborus and Euwallacea are often included here, too; this may be correct, as they seem to be closely related.

Less often, Ambrosiodmus, Premnobius and Xyleborinus are included in Xyleborus, but they seem to be well distinct; Premnobius might even not belong to the Xyleborini at all.

A significant member, X. dispar, causes pear blight.