Butterflies

We have not seen a lot of butterflies this summer.  The drought and being away on vacation are two good reason why.  So, it was nice to see these two butterflies  out and about today.  A gray hairstreak Strymon melinus and a cloudless sulfur Phoebis sennae.  Besides being photographed on the same day do you know what else these butterflies have in common?  They share a host plant, wild senna Cassia hebecarpa, which grows at Habitat Home.