Swirling around the asters this year were clouds of Clouded Sulphurs.
There may be other species of sulphur butterflies mixed in. They not only resemble Clouded Sulphurs but may hybridize with them.
The caterpillars feed on plants in the legume family. We have lots of those among the wildflowers on our land. In addition, an alfalfa field is just across the fence!
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