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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Fauna of New Zealand, No. Articles with ‘species’ microformats.

Common Name

Description Back to Top The cottony cushion scale can be purchask easily from other scale insects in Florida. Icerya purchasi Hemiptera of Tuscany. Monophlebidaewhich if uncontrolled is a serious pest of citrus trees. Distribution Maps Top of page You can pan and zoom the map. 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.

Icerya purchasi – Wikipedia

The other, Coccidoctonus dubius Encyrtidae is a parasite of parasitic wasps. The second and third instars are reddish-brown and covered with tufts of glassy setae, black hairs and yellow and white wax.


Ecology, Impact, and Management. Dark whorls of setae extend from each antennal segment, except the first Ebeling History of Introduction and Spread Top of page I.

Unlike many other scale insects, they retain legs and a limited mobility in all life stages.

Description Top of page Immature I. Studies in inland California Quezada and DeBach, have shown that the two natural enemies seasonally share their prey in different proportions and are fairly even in their competitive abilities, Rodolia usually taking more prey during summer and autumn and Cryptochaetum taking more during winter and early spring. ScaleNet database, life histories.

The main diseases and pests of pomegranate in Huaiyuan area and iceray control.

Biological control of pests in Israel a review CIE, ; Tao, ; Wong et al. It may contain bright red, oblong eggs.

Icerya purchasi

Cottony cushion scale – Icerya purchasi. First instar crawler of the cottony cushion scale, Icerya purchasi Maskell. Monophlebidae on a leaf of Tree nettle, Urtica ferox Urticaceae: Stems dry up, leaves wilt, fall, and branches dieback. This adventive scale insect from Australia was first found in New Zealand in after which it became a serious pest on trees and shrubs, including citrus orchards, until controlled by the Australian cardinal ladybird, Rodolia cardinalis Coccinellidae and the fly, Cottony cushion scale parasitoid, Cryptochaetum iceryae Cryptochetidae.


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This scale infests twigs and branches. Adult female cottony cushion scale, Icerya purchasi.

File:Icerya purchasi – Wikimedia Commons

The Cottony cushion scale has four ‘female’ or five male developmental purchhasi. Coccinellidae predator 10 adventive Rodolia koebelei Coquillett, Koebele’s ladybird Beetle Coleoptera: On some Coccidae in New Zealand. Cottony-cushion scale, fluted scale. Long-established infestations are often surrounded by sooty mould growth, and may be attended by ants. Older nymphs migrate to larger twigs and eventually as adults to branches and the trunk.

If you need expert professional advice, contact your local extension office. They are iicerya with a dark red body and dark colored antennae.

Careful management is necessary when using pesticides against other pests if biological control of I. In New Zealand it is occasionally found in gardens, parks and native habitats in both North and South islands.

Good control was achieved when applied alone or with 0.