Whites and Sulphurs (Butterflies)
What can one say about these families: the whites are generally white, albeit with various markings; the sulphurs are generally yellow, albeit with various markings.
This material is under development and should be viewed as somewhat tentative.
The Cabbage White is perhaps the most common butterfly in North America.
The Pine White visits a daisy.
A sulphur visits a tufted vetch.
The Sulphur (clouded?) sips nectar from a red clover.