von Ellenrieder, N. 2025 New records of scale insects (Hemiptera: Sternorrhyncha: Coccomorpha) from California with an updated checklist for the state. The Pan-Pacific Entomologist 101(1):15–50
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Notes: An updated checklist of all scale insect species known to occur in California is provided, including 485 species in 22 families and 140 genera, of which 307 (63%) are probably native and 177 (37%) have likely been introduced. Of the 307 native species, only 25 (8%) have been documented as pests in contrast with 147 (83%) of the 177 adventive species. The scale insect families in California represented by the highest number of both adventive species and pest species are Diaspididae, Pseudococcidae, and Coccidae.
