Western boxelder bugs are located in Arizona, Nevada, Texas, the states on the Pacific coast, and British Columbia. Western boxelder bugs feed on the female boxelder tree (Acer negundo) - which is located in eastern Oregon, southeastern Washington and eastern California - and can also get nourishment from maple trees. Boxelder bugs favor feeding on seeds although they can also consume sap.
However this one is helping itself to a bud.