Half inch long clearish green caterpillars are skeletonizing the leaves on
my Confederate rose (Hibiscus mutablis) here in hot, humid, south
Mississippi. I've had this plant for years and have never seen these
critters before. I can't find any other insects on or around the plant that
could be the adult version of these larvae. What are they and will BT work
on them? There are too many and the tree is too large to hand pick them
all. Where might they strike after they polish off this plant? Thanks for
suggestions and advice!