Sounds like "the borg" (spider mites), to me.

Buy a fresh "no-pest strip" and hang it on a lower branch.
Then get a large trash can and upend it over the plant at sundown.
That holds the vapor in. Kills adults and larvae.
Remove the can and strip at first light.
Repeat 2 more times in 3 to 5 days.

You might also want to mulch heavily under the plants to annoy future soil dwelling pests.

Also works for thrips and aphids.
Ride on!
Weezard