Papilio rutulus, the western tiger swallowtail butterfly can reach a wingspan of 3 to 4 inches. This common species is present in western North America.  He is certainly the most common butterfly in our back yard.  Or is it his size that makes him most visible?
 
A giclée print of a watercolor painting of a northern tiger swallowtail butterfly, printed onto Arches watercolor paper with archival ink.
 
5 X 5 Inches
 
8x8 Inches