X. frontalis is part of a group of solitary bees called carpenter bees. X. frontalis is vital in the pollination of wild and cultivated large flowering plants. X. frontalischoose their nesting places very carefully. A study was done to see how X. frontalischose their nesting sites. They found that the nesting substrates and nesting sites exhibited a clumped spatial distribution. X. frontalis had a preferredsubstrate and built their nests primarily on those substrates. This shows that they carefully pick out their nesting sites rather than nesting where available.