Two scale species native to southern Africa, Pulvinariella mesembryanthemi and Pulvinaria delottoi (Homoptera: Coccidae), were discovered in California in the vicinity of San Francisco Bay between 1971 and 1973. Laboratory host-range tests indicate that both species are polyphagous on species of Aizoaceae, but in California these scales feed primarily on cultivated and naturalized ornamentals in the genus Carpobrotus. Some succulents in the Crassulaceae are also suitable hosts.
