Hi Gini, try looking at the beneficial insects sticky in the organic forum
I'm thinking that Minute Pirate bugs would be good insects to attract as well as some other predators.... however, you do live in Aruba an probably have different insect fauna and not to mention different flora than we do here.
Try looking up: Insect Predators AND Aruba (in theat context) on Google.
Once you find what insects you have down there it shouldn't be to hard to find out what plants to plant to attract them.
For now, I will offer this advice: plant flowers with a high nectar content, this will attract various beneficials.
Don't use a pesticide as this will do more harm that good.