The Mallow-scrub Hairstreak (AKA Strymon istapa[=columella]) is a very small butterfly native to southern Florida, south Texas, the West Indies and Central America through Bolivia. It is named for the female, who oviposts on plants in the in mallow family (Malvaceae). In the Keys, bay cedar (Suriana maritima) is used for it's caterpillar host plant. This video documents what we suspected and observed in 2009; that the Mallow-scrub Hairstreak also uses Evolvulus glomeratus - Blue Daze or Hawaiian Blue Eyes as a host. Evolvulus glomeratus is in the Convolvulaceae family which is associated most commonly with morning glory flower species.