"Beautiful maple borer" is a phrase that describes a type of beetle that feeds on maple trees. However, if you are seeking synonyms for this phrase, there are several options to consider. For example, you might refer to this insect as a "stunning maple-eating beetle" or a "gorgeous maple borer." Other possibilities include "lovely maple tree beetle" or "charming maple bark borer." No matter which synonym you choose, it should accurately convey the beauty and wonder of this unique insect species, while also highlighting its important role in the ecosystem of maple forests around the world.