I. purchasi belongs to the scale insect family Monophlebidae, the giant scales. The genus Icerya has been poorly studied and it is possible that. Icerya purchasi (Hemiptera: Margarodidae) . How to manage pests citrus cottony cushion scale, scientific name: Icerya purchasi. Univ. Calif. IPM Pest. Icerya purchasi Maskell trials with Cryptochetum iceryae and Rodolia iceryae for improved biological control of Icerya purchasi in Israel.

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However, numerous records on other host plants are in the Division of Plant Industry insect files.

Fact sheet – Cottony cushion scale ()

Unchecked infestations of the cottony cushion scale can have a severe impact on fruit-growing and horticultural ierya, and on the endemic fauna of small islands.

Identification tools for species of quarantine significance. Monophlebidae on a leaf. First record of the cottony cushion scale Icerya purchasi Hemiptera, Monophlebidae in Slovakia – short communication.

Bulletin of Entomological Research, 85 4: The history of the vedalia beetle importation to California and its impact on the development of biological control.

When fully grown, the nymph moults into the next nymphal stage. Scale insects Citrus pests Agricultural pest insects Insects described in Hemiptera of Australia Incestuous animals Insects in culture.

Icerya purchasi

On reaching maturity, the female produces a white, fluted, purchazi ovisac with a series of uniform ridges running lengthwise over the surface. They have one pair of dusky wings. In addition to the direct damage from sap sucking, the insects also secrete honeydewon which sooty mold often grows and causes further damage to the host plant. The adult female I.


Generate a print friendly version containing only the sections you need. Additional Information Biological control of pests Biological control of aphids and other herbivorous pests can reduce the impact of the pests and the need to use insecticides. Bythe problem on citrus had increased to such purchqsi proportions that the entire citrus industry of California was threatened with destruction Bartlett, The distribution in this summary table is based on all the pjrchasi available.

Adult males are uncommon and do not live long.

Cottony-cushion scale, fluted scale. Monophlebidae on a leaf of Lemonwood, Pittosporum eugenioides Pittosporaceae. The scale may easily be mass-reared on citrus seedlings. Colonization trials with Cryptochetum iceryae and Rodolia iceryae for improved biological control of Icerya purchasi in Israel.

Citrus Pests Content last updated June, idtools.

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The microscopic features of I. All phloem-feeding, honeydew -producing pests have the potential to be tended by ants. Coccinellidae feeding on cottony cushion scale, Icerya purchasi Hemiptera: Distribution Back to Top The cottony cushion scale is now widespread throughout the world wherever citrus is grown Ebeling Summary of Invasiveness Top of page I. Salisbury A; Booth RG, Male nymphs are similar in appearance to those of the female. Egyptian Journal of Agricultural Research, 82 3: Icerya purchasinear Livorno, Tuscany, Italy.

ScaleNet database, life histories. Photos of insects and people from the gathering in ArizonaJuly Photos of insects and people from the gathering in Alabama Photos of insects and people from the gathering in Iowa Photos from the Workshop in Grinnell, Iowa Photos from the gathering in Washington.

The control of the cottony-cushion scale was the first outstanding example of the successful biological control of a pest by an introduced natural enemy. Biota Neotropica, 7 3: Survey and level of infestation of scale insects Homoptera: Prunings of infested plants, and the clothing, tools and vehicles of agricultural workers, can become contaminated with the crawlers and so aid in their dispersal.


Vogt H, Vinuela E, eds. However the ‘females’ are actually hermaphrodites with fertilization occurring between the eggs and the sperm of the same individual. The cottony cushion scale originates from Australia.

The following 2 pages uses this file: This tool is part of the Citrus Resource. On some Coccidae in New Zealand. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.

cottony cushion scale (Icerya purchasi) – Icerya purchasi –

By using this site, you agree to the Terms of Use and Privacy Policy. Journal of Applied Entomology The addition of malathion is useful against scales insects, but it is likely to kill natural enemies.

The stylets form two tubes, one down which saliva is pumped into plant cells and the second tube through which it sucks the contents of the plant cells.

Hierodoris atychioides Butler Lepidoptera: CIE, ; Matile-Ferrero et al.

The scale insects of California. Ambienti naturali e antitropici di Sicilia.

At the end of their abdomen they have fleshy lobes bearing tufts of long setae. In New Zealand it is occasionally found in gardens, parks and native habitats in both North and South islands. Journal of Animal Ecology, The egg sac will grow to be two to three times as purchxsi as the body.