Checkered White (LEP25) Pieris protodice

 

     This is a common butterfly of open spaces.  Through the seasons it varies greatly in appearance, but it always has a white base with darker markings.  Females tend to be more heavily spotted than males.  Marks on the underside of the forewings are charcoal-black, while those on the hindwing are olive-green.  The drawing shows it taking nectar from spreading dogbane.