. Cooperative economic insect report. Beneficial insects; Insect pests. - 727 - INSECTS NOT KNOWN TO OCCUR IN THE UNITED STATES EGYPTIAN FLUTED SCALE (Icerya aegyptiaca (Dougl.)) Economic Importance: This margarodid scale was described in 1890 from specimens causing great damage to shade trees in Alexandria, Egypt. The pest occurs in many parts of Micronesia and thrives on many plants. Breadfruit is one of the favored hosts in that area. The insect is common, and sometimes abundant, in Formosa. Avocado and citrus are attacked in some areas, while in others it is not regarded as important on th
. Cooperative economic insect report. Beneficial insects; Insect pests. - 727 - INSECTS NOT KNOWN TO OCCUR IN THE UNITED STATES EGYPTIAN FLUTED SCALE (Icerya aegyptiaca (Dougl.)) Economic Importance: This margarodid scale was described in 1890 from specimens causing great damage to shade trees in Alexandria, Egypt. The pest occurs in many parts of Micronesia and thrives on many plants. Breadfruit is one of the favored hosts in that area. The insect is common, and sometimes abundant, in Formosa. Avocado and citrus are attacked in some areas, while in others it is not regarded as important on these hosts. Coccinellids in the genus Rodolia, particularly R. premila, are effective in controlling the pest. I^. aegyptiaca has been intercepted occasionally at U. S. ports of entry. Distribution: Australia, Ceylon, China, Egypt, Formosa, India, Israel, Japan, Kenya, Micronesia, Philippines, Somaliland, Tanganyika, Tahiti, Wake Island, Zanzibar. Hosts: Recorded from over 100 hosts. More important species include citrus, coffee, croton, palm, fig, castorbean, rose, tea, mulberry, N \ v \. \ i^_i \ \ L_J \ S 1 ; 1 I \ I i I I-. I I ( L i L L i 4 i ^ L. General Distribution of Icerya aegyptiaca Life History and Habits: A detailed life history of I^. aegyptiaca is apparently not available. Observations in Egypt indicate that the females deposit from 150 to 200 eggs. Young nymphs are very active, becoming less active as they mature. This species is capable of building up to large populations which cause considerable injury to host plants. There appears to be several generations a year. (Margarodidae, Hemiptera) No. 119 of Series. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Animal and Plant Health Service. Plant Protection and Quarantine Programs; United States. Bureau of Entomology
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