Have you told the seller they have them? I would let them know ow ASAP so others do not start spreading these pests. They are not rampant in our hobby yet but can be if we don't take measures. We all know how hard montipora eating nudis see to get rid of. I imagine these are just as bad. I have seen white ones but not ones with black stripes. What damage did they do? Lots of very small dots for bite marks where they were eating?