Herein we treat secondary pests that occasionally infest citrus in the Mediterranean Region. Many of these species occur fortuitously, whereas a few may become pests. Some cause economic-level damage only in one or a few countries, being pests during a few years, later disappearing or becoming almost harmless. Therefore this list is probably incomplete, and will require changes in the future. Brief systematic and biological data are provided for each species, with a minimum of references.