Queen Alexandra=s Sulphur (LEP36) Colias alexandra


     A sulphur of the Rocky Mountains and surrounding areas.  The very bright yellow wings of the male are set off by sharp black margins.  The female is a paler shade of yellow, and has only a bit of charcoal dusting around the forewing tips.  Underneath, this butterfly is colored a cool green.  It perches on a host plant, the golden banner.