Xyleborus

[beetle] With over 500 species, Xyleborus is by far the largest bark beetle genus in the tribe Xyleborini. Xyloborus 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, ...
Found on http://en.wikipedia.org/wiki/Xyleborus_(beetle)

Xyleborus

[lichen] Xyleborus is a genus of lichen in the Stereocaulaceae family of the Lecanorales order. The genus is monotypic and contains the single species Xyleborus sporodochifer, first reported in 2007, and found in the Ozarks in Missouri. ...
Found on http://en.wikipedia.org/wiki/Xyleborus_(lichen)

Xyleborus

Xyleborus is a genus of beetle of the family Scolytidae that live in the wood of deciduous trees and have their brood galleries there. They don't eat the wood but rather the ambrosia fungoid that grows on it. The males are wingless and after mating die.
Found on http://www.probertencyclopaedia.com/browse/BX.HTM
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