A few weeks ago the Florida Dept of Ag inspector told me they believed the mite is restricted to the north end of Pine Island, called Bokeelia. This Wednesday the FL. Dept of Ag stopped by my neighbor's Lychee grove and gave notice that all Bokeelia Lychee is under quarantine. I spoke to the inspector who was getting compliance agreements signed.
Movement of plant material off farms is prohibited, fruit can be shipped out of state or into Lee County only, but leaves and stems must be removed. The Erinose Mite creates a shelter which makes it resistant to any pesticide, so affected trees must be pruned of all affected growth which means heavy pruning. FLDept.of AG is seeking a contractor to provide major pruning of all existing trees, which should be followed up by spraying as regrowth occurs. This needs to be done as thoroughly and as close to simultaneously as possible across the affected area to prevent reinfection from untreated trees. That is the most up-to-date information I have.