Hibiscus: Pests on Rose of Sharon, 1 by Msank

Msank wrote:
Please Help! My rose of sharon is infested with an invisible pest. I noticed the new buds are turning yellow, and when I touch them they fall off. The buds have small holes "bored" into them. Also, the leaves look as though grasshoppers or worms have eaten most of the leaves (although there are no visible droppings on the leaves). I've posted some pictures. The plant was healthy until the past couple of days.
Thanks, Marsha