Also, I came across zero reports of the bugs or eggs being on anything other than
acropora. Eric Borneman's article on the red bugs pointed out that the red bugs laid their eggs on the coral itself and that the bugs did not leave the coral for other non
acropora corals.
Now it is still a very good idea to
QT anything for 5-7 days in case there are eggs on it, but I would say it is not very likely that a crab or shrimp would be carrying eggs.
Brian