Xylocopa valga is a species of carpenter bee common to: western, central and southern Europe, except for far northern latitudes; the Caucasus; Middle East; Central Asia; and Mongolia.

[3] The species has become extinct in Latvia and Lithuania.

[4] This solitary bee has a black and blue coloured body, 20–27 mm in length, and densely covered with purple hairs.

The small wings also have a purple tint.

The bee creates cavity nests by gnawing the wood in the trunks of dead trees and in old wooden structures.