Insect and Spider Identification: milkweed assassin nymph or leaffooted bug nymph?, 1 by xandrale

xandrale wrote:
I noticed these bugs on my hibiscus last late week. No damage had been done to the plant; they merely congregated around flowers that had died but not shed. Originally I thought they were assassin bug nymphs, since nothing looked chewed up, but this morning two of the buds had HUGE holes in them (will post picture of that too). Now I'm wondering if they really are leaffooted nymphs. There are about 20 or so of them, but of course this morning none were on the buds that were chewed; the majority of them were underneath today's one bloom (no damage). Also, do you have any idea what the white specks are in the picture on the buds those just appeared today as well. I'm new at this plant business and am learning as I go.
Thanks for the help.