Abstract
Abstract This chapter deals with potential invasive scale insect pests for the USA and the Caribbean Basin. There are approximately 7500 known species of scale insects (Coccoidea) belonging to 45 families (extant and fossil); however, the most common species, and the ones that are usually intercepted at US ports of entry on plant material, belong to one of the following eight families: Asterolecaniidae, Coccidae, Dactylopiidae, Diaspididae, Monophlebidae (formerly part of Margardodidae), Ortheziidae, Pseudococcidae and Stictococcidae. Tabulated data are provided on the number of species in these families that are known worldwide, and on the number of species known to occur in the USA and in the following seven zoogeographic regions: Nearctic, Neotropical, Afrotropical, Palearctic, Oriental, Australasian and Antarctica. These data were extracted from ScaleNet (2011), an online database that includes all published information on scale insect species.
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