Tiny transluscent greenish bugs all over my Howeara Lava Burst flowers and new shoots

[ALToronto]

They don't seem to be eating anything, but they sure like to sit on the blooms! Even though the blooms are at the end of their life span and are about to drop.

These bugs also love the newest tips of soft-leaf plants such as stonecrop, baby's tears and leafy orchids.

Are they harmful? What should I use to get rid of them? I sprayed one of the Howeara flower spikes with SucraShield, and all it did was kill the flowers. The bugs were back within a couple of days.

Here are some extreme close-up photos. The bugs are less than 1 mm long.