Some of the ones we're dealing with now:
Trees such as Albizia, Miconia, Cecropia and many other invaders.
Critters such as Coqui frogs, Fireants, African snails, Coffee borer beetle and numerous other unpleasant critters.
What follows is a slideshow of creatures that were intercepted over the years on shipments, in luggage, and in the mail. The Department of Ag is responsible for monitoring new arrivals and I thank them for this gruesome display they have in their foyer.
WARNING: Do not look any further if you are squeamish.
However, in Hawaii there ARE spiders along with geckos, chameleons, lizards and many wonderful bug-eating critters.